Home / 155,848.34-215,059.92-87,867.74

Finding the Fourth Proportional to 155,848.34, 215,059.92 and 87,867.74

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Solution

The fourth proportional to 155,848.34, 215,059.92 and 87,867.74 is: 121,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,848.34 : 215,059.92 = 87,867.74 : x
  2. Step 2: Convert to fraction form
    155,848.34/215,059.92 = 87,867.74/x
  3. Step 3: Cross multiply
    155,848.34x = 215,059.92 × 87,867.74
  4. Step 4: Simplify right side
    155,848.34x = 18,896,829,134.98
  5. Step 5: Solve for x
    x = 18,896,829,134.98/155,848.34
  6. Step 6: Final answer
    x = 121,251.40

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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.