Home / 112,878.20-155,773.68-61,895.60

Finding the Fourth Proportional to 112,878.20, 155,773.68 and 61,895.60

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Solution

The fourth proportional to 112,878.20, 155,773.68 and 61,895.60 is: 85,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,878.20 : 155,773.68 = 61,895.60 : x
  2. Step 2: Convert to fraction form
    112,878.20/155,773.68 = 61,895.60/x
  3. Step 3: Cross multiply
    112,878.20x = 155,773.68 × 61,895.60
  4. Step 4: Simplify right side
    112,878.20x = 9,641,705,387.81
  5. Step 5: Solve for x
    x = 9,641,705,387.81/112,878.20
  6. Step 6: Final answer
    x = 85,416.90

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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.