Home / 155,846.34-215,057.16-87,865.74

Finding the Fourth Proportional to 155,846.34, 215,057.16 and 87,865.74

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Solution

The fourth proportional to 155,846.34, 215,057.16 and 87,865.74 is: 121,248.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,846.34 : 215,057.16 = 87,865.74 : x
  2. Step 2: Convert to fraction form
    155,846.34/215,057.16 = 87,865.74/x
  3. Step 3: Cross multiply
    155,846.34x = 215,057.16 × 87,865.74
  4. Step 4: Simplify right side
    155,846.34x = 18,896,156,505.70
  5. Step 5: Solve for x
    x = 18,896,156,505.70/155,846.34
  6. Step 6: Final answer
    x = 121,248.64

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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.