Home / 135,746,987,100.17-187,353,637,946.82-78,689,988,581.45

Finding the Fourth Proportional to 135,746,987,100.17, 187,353,637,946.82 and 78,689,988,581.45

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Solution

The fourth proportional to 135,746,987,100.17, 187,353,637,946.82 and 78,689,988,581.45 is: 108,605,398,511.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,746,987,100.17 : 187,353,637,946.82 = 78,689,988,581.45 : x
  2. Step 2: Convert to fraction form
    135,746,987,100.17/187,353,637,946.82 = 78,689,988,581.45/x
  3. Step 3: Cross multiply
    135,746,987,100.17x = 187,353,637,946.82 × 78,689,988,581.45
  4. Step 4: Simplify right side
    135,746,987,100.17x = 14,742,855,630,727,449,411,584
  5. Step 5: Solve for x
    x = 14,742,855,630,727,449,411,584/135,746,987,100.17
  6. Step 6: Final answer
    x = 108,605,398,511.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.