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Finding the Fourth Proportional to 138,159.80, 207,349.06 and 53,960.30

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Solution

The fourth proportional to 138,159.80, 207,349.06 and 53,960.30 is: 80,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,159.80 : 207,349.06 = 53,960.30 : x
  2. Step 2: Convert to fraction form
    138,159.80/207,349.06 = 53,960.30/x
  3. Step 3: Cross multiply
    138,159.80x = 207,349.06 × 53,960.30
  4. Step 4: Simplify right side
    138,159.80x = 11,188,617,482.32
  5. Step 5: Solve for x
    x = 11,188,617,482.32/138,159.80
  6. Step 6: Final answer
    x = 80,983.16

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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.