Home / 99,147.20-136,823.16-56,705.76

Finding the Fourth Proportional to 99,147.20, 136,823.16 and 56,705.76

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Solution

The fourth proportional to 99,147.20, 136,823.16 and 56,705.76 is: 78,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,147.20 : 136,823.16 = 56,705.76 : x
  2. Step 2: Convert to fraction form
    99,147.20/136,823.16 = 56,705.76/x
  3. Step 3: Cross multiply
    99,147.20x = 136,823.16 × 56,705.76
  4. Step 4: Simplify right side
    99,147.20x = 7,758,661,273.40
  5. Step 5: Solve for x
    x = 7,758,661,273.40/99,147.20
  6. Step 6: Final answer
    x = 78,253.97

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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.