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Finding the Fourth Proportional to 102,545.80, 153,818.70 and 76,301.80

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Solution

The fourth proportional to 102,545.80, 153,818.70 and 76,301.80 is: 114,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,545.80 : 153,818.70 = 76,301.80 : x
  2. Step 2: Convert to fraction form
    102,545.80/153,818.70 = 76,301.80/x
  3. Step 3: Cross multiply
    102,545.80x = 153,818.70 × 76,301.80
  4. Step 4: Simplify right side
    102,545.80x = 11,736,643,683.66
  5. Step 5: Solve for x
    x = 11,736,643,683.66/102,545.80
  6. Step 6: Final answer
    x = 114,452.70

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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.