Home / 87,135,326.40-130,702,989.60-77,729,476.80

Finding the Fourth Proportional to 87,135,326.40, 130,702,989.60 and 77,729,476.80

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Solution

The fourth proportional to 87,135,326.40, 130,702,989.60 and 77,729,476.80 is: 116,594,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,135,326.40 : 130,702,989.60 = 77,729,476.80 : x
  2. Step 2: Convert to fraction form
    87,135,326.40/130,702,989.60 = 77,729,476.80/x
  3. Step 3: Cross multiply
    87,135,326.40x = 130,702,989.60 × 77,729,476.80
  4. Step 4: Simplify right side
    87,135,326.40x = 10,159,474,997,803,840
  5. Step 5: Solve for x
    x = 10,159,474,997,803,840/87,135,326.40
  6. Step 6: Final answer
    x = 116,594,215.20

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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.