Home / 99,820.17-137,750.02-56,798.73

Finding the Fourth Proportional to 99,820.17, 137,750.02 and 56,798.73

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Solution

The fourth proportional to 99,820.17, 137,750.02 and 56,798.73 is: 78,381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,820.17 : 137,750.02 = 56,798.73 : x
  2. Step 2: Convert to fraction form
    99,820.17/137,750.02 = 56,798.73/x
  3. Step 3: Cross multiply
    99,820.17x = 137,750.02 × 56,798.73
  4. Step 4: Simplify right side
    99,820.17x = 7,824,025,909.48
  5. Step 5: Solve for x
    x = 7,824,025,909.48/99,820.17
  6. Step 6: Final answer
    x = 78,381.21

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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.