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Finding the Fourth Proportional to 138,300.70, 207,451.05 and 138,300.70

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Solution

The fourth proportional to 138,300.70, 207,451.05 and 138,300.70 is: 207,451.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,300.70 : 207,451.05 = 138,300.70 : x
  2. Step 2: Convert to fraction form
    138,300.70/207,451.05 = 138,300.70/x
  3. Step 3: Cross multiply
    138,300.70x = 207,451.05 × 138,300.70
  4. Step 4: Simplify right side
    138,300.70x = 28,690,625,430.74
  5. Step 5: Solve for x
    x = 28,690,625,430.74/138,300.70
  6. Step 6: Final answer
    x = 207,451.05

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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.