Home / 261,468,020.40-392,202,030.60-125,419,124.40

Finding the Fourth Proportional to 261,468,020.40, 392,202,030.60 and 125,419,124.40

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Solution

The fourth proportional to 261,468,020.40, 392,202,030.60 and 125,419,124.40 is: 188,128,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,468,020.40 : 392,202,030.60 = 125,419,124.40 : x
  2. Step 2: Convert to fraction form
    261,468,020.40/392,202,030.60 = 125,419,124.40/x
  3. Step 3: Cross multiply
    261,468,020.40x = 392,202,030.60 × 125,419,124.40
  4. Step 4: Simplify right side
    261,468,020.40x = 49,189,635,265,754,008
  5. Step 5: Solve for x
    x = 49,189,635,265,754,008/261,468,020.40
  6. Step 6: Final answer
    x = 188,128,686.60

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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.