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Finding the Fourth Proportional to 138,477.61, 207,716.40 and 43,774.31

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Solution

The fourth proportional to 138,477.61, 207,716.40 and 43,774.31 is: 65,661.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,477.61 : 207,716.40 = 43,774.31 : x
  2. Step 2: Convert to fraction form
    138,477.61/207,716.40 = 43,774.31/x
  3. Step 3: Cross multiply
    138,477.61x = 207,716.40 × 43,774.31
  4. Step 4: Simplify right side
    138,477.61x = 9,092,641,047.10
  5. Step 5: Solve for x
    x = 9,092,641,047.10/138,477.61
  6. Step 6: Final answer
    x = 65,661.45

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Similar ratio
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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.