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Finding the Fourth Proportional to 145,785.57, 218,708.01 and 61,545.76

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Solution

The fourth proportional to 145,785.57, 218,708.01 and 61,545.76 is: 92,331.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,785.57 : 218,708.01 = 61,545.76 : x
  2. Step 2: Convert to fraction form
    145,785.57/218,708.01 = 61,545.76/x
  3. Step 3: Cross multiply
    145,785.57x = 218,708.01 × 61,545.76
  4. Step 4: Simplify right side
    145,785.57x = 13,460,550,693.54
  5. Step 5: Solve for x
    x = 13,460,550,693.54/145,785.57
  6. Step 6: Final answer
    x = 92,331.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.