Home / 138,677.52-191,374.76-75,015.12

Finding the Fourth Proportional to 138,677.52, 191,374.76 and 75,015.12

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Solution

The fourth proportional to 138,677.52, 191,374.76 and 75,015.12 is: 103,520.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,677.52 : 191,374.76 = 75,015.12 : x
  2. Step 2: Convert to fraction form
    138,677.52/191,374.76 = 75,015.12/x
  3. Step 3: Cross multiply
    138,677.52x = 191,374.76 × 75,015.12
  4. Step 4: Simplify right side
    138,677.52x = 14,356,000,586.37
  5. Step 5: Solve for x
    x = 14,356,000,586.37/138,677.52
  6. Step 6: Final answer
    x = 103,520.75

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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.