Home / 151,421.76-208,947.75-89,322.57

Finding the Fourth Proportional to 151,421.76, 208,947.75 and 89,322.57

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Solution

The fourth proportional to 151,421.76, 208,947.75 and 89,322.57 is: 123,256.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,421.76 : 208,947.75 = 89,322.57 : x
  2. Step 2: Convert to fraction form
    151,421.76/208,947.75 = 89,322.57/x
  3. Step 3: Cross multiply
    151,421.76x = 208,947.75 × 89,322.57
  4. Step 4: Simplify right side
    151,421.76x = 18,663,750,193.20
  5. Step 5: Solve for x
    x = 18,663,750,193.20/151,421.76
  6. Step 6: Final answer
    x = 123,256.72

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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.