Home / 423,023.74-634,595.92-138,736.53

Finding the Fourth Proportional to 423,023.74, 634,595.92 and 138,736.53

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Solution

The fourth proportional to 423,023.74, 634,595.92 and 138,736.53 is: 208,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,023.74 : 634,595.92 = 138,736.53 : x
  2. Step 2: Convert to fraction form
    423,023.74/634,595.92 = 138,736.53/x
  3. Step 3: Cross multiply
    423,023.74x = 634,595.92 × 138,736.53
  4. Step 4: Simplify right side
    423,023.74x = 88,041,635,546.12
  5. Step 5: Solve for x
    x = 88,041,635,546.12/423,023.74
  6. Step 6: Final answer
    x = 208,124.57

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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.