Home / 128,634,723.29-177,517,042.74-69,897,388.20

Finding the Fourth Proportional to 128,634,723.29, 177,517,042.74 and 69,897,388.20

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Solution

The fourth proportional to 128,634,723.29, 177,517,042.74 and 69,897,388.20 is: 96,459,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,634,723.29 : 177,517,042.74 = 69,897,388.20 : x
  2. Step 2: Convert to fraction form
    128,634,723.29/177,517,042.74 = 69,897,388.20/x
  3. Step 3: Cross multiply
    128,634,723.29x = 177,517,042.74 × 69,897,388.20
  4. Step 4: Simplify right side
    128,634,723.29x = 12,407,977,648,513,772
  5. Step 5: Solve for x
    x = 12,407,977,648,513,772/128,634,723.29
  6. Step 6: Final answer
    x = 96,459,006.80

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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.