Home / 86,931,928.20-130,397,892.30-77,862,001.80

Finding the Fourth Proportional to 86,931,928.20, 130,397,892.30 and 77,862,001.80

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Solution

The fourth proportional to 86,931,928.20, 130,397,892.30 and 77,862,001.80 is: 116,793,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,931,928.20 : 130,397,892.30 = 77,862,001.80 : x
  2. Step 2: Convert to fraction form
    86,931,928.20/130,397,892.30 = 77,862,001.80/x
  3. Step 3: Cross multiply
    86,931,928.20x = 130,397,892.30 × 77,862,001.80
  4. Step 4: Simplify right side
    86,931,928.20x = 10,153,040,924,978,806
  5. Step 5: Solve for x
    x = 10,153,040,924,978,806/86,931,928.20
  6. Step 6: Final answer
    x = 116,793,002.70

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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.