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Finding the Fourth Proportional to 107,239.86, 148,003.80 and 61,928.88

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Solution

The fourth proportional to 107,239.86, 148,003.80 and 61,928.88 is: 85,469.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,239.86 : 148,003.80 = 61,928.88 : x
  2. Step 2: Convert to fraction form
    107,239.86/148,003.80 = 61,928.88/x
  3. Step 3: Cross multiply
    107,239.86x = 148,003.80 × 61,928.88
  4. Step 4: Simplify right side
    107,239.86x = 9,165,709,569.74
  5. Step 5: Solve for x
    x = 9,165,709,569.74/107,239.86
  6. Step 6: Final answer
    x = 85,469.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.