Home / 112,429.55-155,153.19-61,442.31

Finding the Fourth Proportional to 112,429.55, 155,153.19 and 61,442.31

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Solution

The fourth proportional to 112,429.55, 155,153.19 and 61,442.31 is: 84,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,429.55 : 155,153.19 = 61,442.31 : x
  2. Step 2: Convert to fraction form
    112,429.55/155,153.19 = 61,442.31/x
  3. Step 3: Cross multiply
    112,429.55x = 155,153.19 × 61,442.31
  4. Step 4: Simplify right side
    112,429.55x = 9,532,969,391.29
  5. Step 5: Solve for x
    x = 9,532,969,391.29/112,429.55
  6. Step 6: Final answer
    x = 84,790.60

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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.