Home / 155,853.10-215,066.48-87,872.50

Finding the Fourth Proportional to 155,853.10, 215,066.48 and 87,872.50

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Solution

The fourth proportional to 155,853.10, 215,066.48 and 87,872.50 is: 121,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,853.10 : 215,066.48 = 87,872.50 : x
  2. Step 2: Convert to fraction form
    155,853.10/215,066.48 = 87,872.50/x
  3. Step 3: Cross multiply
    155,853.10x = 215,066.48 × 87,872.50
  4. Step 4: Simplify right side
    155,853.10x = 18,898,429,263.80
  5. Step 5: Solve for x
    x = 18,898,429,263.80/155,853.10
  6. Step 6: Final answer
    x = 121,257.96

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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.