Home / 99,774.28-137,691.72-56,752.66

Finding the Fourth Proportional to 99,774.28, 137,691.72 and 56,752.66

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Solution

The fourth proportional to 99,774.28, 137,691.72 and 56,752.66 is: 78,320.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,774.28 : 137,691.72 = 56,752.66 : x
  2. Step 2: Convert to fraction form
    99,774.28/137,691.72 = 56,752.66/x
  3. Step 3: Cross multiply
    99,774.28x = 137,691.72 × 56,752.66
  4. Step 4: Simplify right side
    99,774.28x = 7,814,371,369.98
  5. Step 5: Solve for x
    x = 7,814,371,369.98/99,774.28
  6. Step 6: Final answer
    x = 78,320.50

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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.