Home / 156,868.09-216,475.12-85,248.36

Finding the Fourth Proportional to 156,868.09, 216,475.12 and 85,248.36

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Solution

The fourth proportional to 156,868.09, 216,475.12 and 85,248.36 is: 117,641.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,868.09 : 216,475.12 = 85,248.36 : x
  2. Step 2: Convert to fraction form
    156,868.09/216,475.12 = 85,248.36/x
  3. Step 3: Cross multiply
    156,868.09x = 216,475.12 × 85,248.36
  4. Step 4: Simplify right side
    156,868.09x = 18,454,148,960.80
  5. Step 5: Solve for x
    x = 18,454,148,960.80/156,868.09
  6. Step 6: Final answer
    x = 117,641.19

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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.