Home / 156,690.19-216,226.56-85,068.66

Finding the Fourth Proportional to 156,690.19, 216,226.56 and 85,068.66

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Solution

The fourth proportional to 156,690.19, 216,226.56 and 85,068.66 is: 117,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,690.19 : 216,226.56 = 85,068.66 : x
  2. Step 2: Convert to fraction form
    156,690.19/216,226.56 = 85,068.66/x
  3. Step 3: Cross multiply
    156,690.19x = 216,226.56 × 85,068.66
  4. Step 4: Simplify right side
    156,690.19x = 18,394,103,715.61
  5. Step 5: Solve for x
    x = 18,394,103,715.61/156,690.19
  6. Step 6: Final answer
    x = 117,391.55

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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.