Home / 155,890.02-215,125.22-87,905.76

Finding the Fourth Proportional to 155,890.02, 215,125.22 and 87,905.76

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Solution

The fourth proportional to 155,890.02, 215,125.22 and 87,905.76 is: 121,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,890.02 : 215,125.22 = 87,905.76 : x
  2. Step 2: Convert to fraction form
    155,890.02/215,125.22 = 87,905.76/x
  3. Step 3: Cross multiply
    155,890.02x = 215,125.22 × 87,905.76
  4. Step 4: Simplify right side
    155,890.02x = 18,910,744,877.84
  5. Step 5: Solve for x
    x = 18,910,744,877.84/155,890.02
  6. Step 6: Final answer
    x = 121,308.25

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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.