Home / 87,135,329.40-130,702,994.10-77,729,479.80

Finding the Fourth Proportional to 87,135,329.40, 130,702,994.10 and 77,729,479.80

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Solution

The fourth proportional to 87,135,329.40, 130,702,994.10 and 77,729,479.80 is: 116,594,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,135,329.40 : 130,702,994.10 = 77,729,479.80 : x
  2. Step 2: Convert to fraction form
    87,135,329.40/130,702,994.10 = 77,729,479.80/x
  3. Step 3: Cross multiply
    87,135,329.40x = 130,702,994.10 × 77,729,479.80
  4. Step 4: Simplify right side
    87,135,329.40x = 10,159,475,739,695,468
  5. Step 5: Solve for x
    x = 10,159,475,739,695,468/87,135,329.40
  6. Step 6: Final answer
    x = 116,594,219.70

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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.