Home / 91,624.11-138,060.35-75,348.72

Finding the Fourth Proportional to 91,624.11, 138,060.35 and 75,348.72

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Solution

The fourth proportional to 91,624.11, 138,060.35 and 75,348.72 is: 113,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,624.11 : 138,060.35 = 75,348.72 : x
  2. Step 2: Convert to fraction form
    91,624.11/138,060.35 = 75,348.72/x
  3. Step 3: Cross multiply
    91,624.11x = 138,060.35 × 75,348.72
  4. Step 4: Simplify right side
    91,624.11x = 10,402,670,278.51
  5. Step 5: Solve for x
    x = 10,402,670,278.51/91,624.11
  6. Step 6: Final answer
    x = 113,536.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.