Home / 105,437.52-145,503.60-57,691.07

Finding the Fourth Proportional to 105,437.52, 145,503.60 and 57,691.07

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Solution

The fourth proportional to 105,437.52, 145,503.60 and 57,691.07 is: 79,613.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,437.52 : 145,503.60 = 57,691.07 : x
  2. Step 2: Convert to fraction form
    105,437.52/145,503.60 = 57,691.07/x
  3. Step 3: Cross multiply
    105,437.52x = 145,503.60 × 57,691.07
  4. Step 4: Simplify right side
    105,437.52x = 8,394,257,645.33
  5. Step 5: Solve for x
    x = 8,394,257,645.33/105,437.52
  6. Step 6: Final answer
    x = 79,613.57

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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.