Home / 100,704,611.40-138,972,159.84-56,651,641.20

Finding the Fourth Proportional to 100,704,611.40, 138,972,159.84 and 56,651,641.20

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Solution

The fourth proportional to 100,704,611.40, 138,972,159.84 and 56,651,641.20 is: 78,179,150.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,704,611.40 : 138,972,159.84 = 56,651,641.20 : x
  2. Step 2: Convert to fraction form
    100,704,611.40/138,972,159.84 = 56,651,641.20/x
  3. Step 3: Cross multiply
    100,704,611.40x = 138,972,159.84 × 56,651,641.20
  4. Step 4: Simplify right side
    100,704,611.40x = 7,873,000,936,044,730
  5. Step 5: Solve for x
    x = 7,873,000,936,044,730/100,704,611.40
  6. Step 6: Final answer
    x = 78,179,150.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.