Home / 85,293,141.60-127,939,712.40-69,987,640.80

Finding the Fourth Proportional to 85,293,141.60, 127,939,712.40 and 69,987,640.80

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Solution

The fourth proportional to 85,293,141.60, 127,939,712.40 and 69,987,640.80 is: 104,981,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,293,141.60 : 127,939,712.40 = 69,987,640.80 : x
  2. Step 2: Convert to fraction form
    85,293,141.60/127,939,712.40 = 69,987,640.80/x
  3. Step 3: Cross multiply
    85,293,141.60x = 127,939,712.40 × 69,987,640.80
  4. Step 4: Simplify right side
    85,293,141.60x = 8,954,198,635,506,506
  5. Step 5: Solve for x
    x = 8,954,198,635,506,506/85,293,141.60
  6. Step 6: Final answer
    x = 104,981,461.20

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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.