Home / 112,770.12-155,616.08-61,772.66

Finding the Fourth Proportional to 112,770.12, 155,616.08 and 61,772.66

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Solution

The fourth proportional to 112,770.12, 155,616.08 and 61,772.66 is: 85,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,770.12 : 155,616.08 = 61,772.66 : x
  2. Step 2: Convert to fraction form
    112,770.12/155,616.08 = 61,772.66/x
  3. Step 3: Cross multiply
    112,770.12x = 155,616.08 × 61,772.66
  4. Step 4: Simplify right side
    112,770.12x = 9,612,818,113.43
  5. Step 5: Solve for x
    x = 9,612,818,113.43/112,770.12
  6. Step 6: Final answer
    x = 85,242.60

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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.