Home / 99,358.92-137,117.70-56,930.76

Finding the Fourth Proportional to 99,358.92, 137,117.70 and 56,930.76

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Solution

The fourth proportional to 99,358.92, 137,117.70 and 56,930.76 is: 78,565.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,358.92 : 137,117.70 = 56,930.76 : x
  2. Step 2: Convert to fraction form
    99,358.92/137,117.70 = 56,930.76/x
  3. Step 3: Cross multiply
    99,358.92x = 137,117.70 × 56,930.76
  4. Step 4: Simplify right side
    99,358.92x = 7,806,214,870.45
  5. Step 5: Solve for x
    x = 7,806,214,870.45/99,358.92
  6. Step 6: Final answer
    x = 78,565.82

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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.