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Finding the Fourth Proportional to 102,737.80, 154,221.90 and 79,467.40

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Solution

The fourth proportional to 102,737.80, 154,221.90 and 79,467.40 is: 119,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,737.80 : 154,221.90 = 79,467.40 : x
  2. Step 2: Convert to fraction form
    102,737.80/154,221.90 = 79,467.40/x
  3. Step 3: Cross multiply
    102,737.80x = 154,221.90 × 79,467.40
  4. Step 4: Simplify right side
    102,737.80x = 12,255,613,416.06
  5. Step 5: Solve for x
    x = 12,255,613,416.06/102,737.80
  6. Step 6: Final answer
    x = 119,290.21

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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.