Home / 156,631.12-216,148.50-85,010.51

Finding the Fourth Proportional to 156,631.12, 216,148.50 and 85,010.51

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Solution

The fourth proportional to 156,631.12, 216,148.50 and 85,010.51 is: 117,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,631.12 : 216,148.50 = 85,010.51 : x
  2. Step 2: Convert to fraction form
    156,631.12/216,148.50 = 85,010.51/x
  3. Step 3: Cross multiply
    156,631.12x = 216,148.50 × 85,010.51
  4. Step 4: Simplify right side
    156,631.12x = 18,374,894,761.11
  5. Step 5: Solve for x
    x = 18,374,894,761.11/156,631.12
  6. Step 6: Final answer
    x = 117,313.18

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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.