Home / 135,746,987,097.91-187,353,637,943.71-78,689,988,579.20

Finding the Fourth Proportional to 135,746,987,097.91, 187,353,637,943.71 and 78,689,988,579.20

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Solution

The fourth proportional to 135,746,987,097.91, 187,353,637,943.71 and 78,689,988,579.20 is: 108,605,398,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,746,987,097.91 : 187,353,637,943.71 = 78,689,988,579.20 : x
  2. Step 2: Convert to fraction form
    135,746,987,097.91/187,353,637,943.71 = 78,689,988,579.20/x
  3. Step 3: Cross multiply
    135,746,987,097.91x = 187,353,637,943.71 × 78,689,988,579.20
  4. Step 4: Simplify right side
    135,746,987,097.91x = 14,742,855,630,061,175,832,576
  5. Step 5: Solve for x
    x = 14,742,855,630,061,175,832,576/135,746,987,097.91
  6. Step 6: Final answer
    x = 108,605,398,508.24

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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.