Home / 99,377.89-137,165.84-56,382.55

Finding the Fourth Proportional to 99,377.89, 137,165.84 and 56,382.55

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Solution

The fourth proportional to 99,377.89, 137,165.84 and 56,382.55 is: 77,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,377.89 : 137,165.84 = 56,382.55 : x
  2. Step 2: Convert to fraction form
    99,377.89/137,165.84 = 56,382.55/x
  3. Step 3: Cross multiply
    99,377.89x = 137,165.84 × 56,382.55
  4. Step 4: Simplify right side
    99,377.89x = 7,733,759,630.13
  5. Step 5: Solve for x
    x = 7,733,759,630.13/99,377.89
  6. Step 6: Final answer
    x = 77,821.74

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1.5x scale

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.