Home / 105,154,073.90-157,590,117.11-81,838,968.39

Finding the Fourth Proportional to 105,154,073.90, 157,590,117.11 and 81,838,968.39

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Solution

The fourth proportional to 105,154,073.90, 157,590,117.11 and 81,838,968.39 is: 122,648,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,154,073.90 : 157,590,117.11 = 81,838,968.39 : x
  2. Step 2: Convert to fraction form
    105,154,073.90/157,590,117.11 = 81,838,968.39/x
  3. Step 3: Cross multiply
    105,154,073.90x = 157,590,117.11 × 81,838,968.39
  4. Step 4: Simplify right side
    105,154,073.90x = 12,897,012,612,332,492
  5. Step 5: Solve for x
    x = 12,897,012,612,332,492/105,154,073.90
  6. Step 6: Final answer
    x = 122,648,720.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.