Home / 156,971.62-235,141.79-72,613.36

Finding the Fourth Proportional to 156,971.62, 235,141.79 and 72,613.36

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Solution

The fourth proportional to 156,971.62, 235,141.79 and 72,613.36 is: 108,774.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.62 : 235,141.79 = 72,613.36 : x
  2. Step 2: Convert to fraction form
    156,971.62/235,141.79 = 72,613.36/x
  3. Step 3: Cross multiply
    156,971.62x = 235,141.79 × 72,613.36
  4. Step 4: Simplify right side
    156,971.62x = 17,074,434,272.61
  5. Step 5: Solve for x
    x = 17,074,434,272.61/156,971.62
  6. Step 6: Final answer
    x = 108,774.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.