Home / 144,612,693.72-199,564,900-78,532,729.28

Finding the Fourth Proportional to 144,612,693.72, 199,564,900 and 78,532,729.28

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Solution

The fourth proportional to 144,612,693.72, 199,564,900 and 78,532,729.28 is: 108,374,831.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,612,693.72 : 199,564,900 = 78,532,729.28 : x
  2. Step 2: Convert to fraction form
    144,612,693.72/199,564,900 = 78,532,729.28/x
  3. Step 3: Cross multiply
    144,612,693.72x = 199,564,900 × 78,532,729.28
  4. Step 4: Simplify right side
    144,612,693.72x = 15,672,376,265,490,272
  5. Step 5: Solve for x
    x = 15,672,376,265,490,272/144,612,693.72
  6. Step 6: Final answer
    x = 108,374,831.16

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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.