Home / 128,634,724.29-177,517,044.12-69,897,389.20

Finding the Fourth Proportional to 128,634,724.29, 177,517,044.12 and 69,897,389.20

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Solution

The fourth proportional to 128,634,724.29, 177,517,044.12 and 69,897,389.20 is: 96,459,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,634,724.29 : 177,517,044.12 = 69,897,389.20 : x
  2. Step 2: Convert to fraction form
    128,634,724.29/177,517,044.12 = 69,897,389.20/x
  3. Step 3: Cross multiply
    128,634,724.29x = 177,517,044.12 × 69,897,389.20
  4. Step 4: Simplify right side
    128,634,724.29x = 12,407,977,922,489,212
  5. Step 5: Solve for x
    x = 12,407,977,922,489,212/128,634,724.29
  6. Step 6: Final answer
    x = 96,459,008.18

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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.