Home / 111,143.38-153,376.05-63,396.58

Finding the Fourth Proportional to 111,143.38, 153,376.05 and 63,396.58

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Solution

The fourth proportional to 111,143.38, 153,376.05 and 63,396.58 is: 87,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,143.38 : 153,376.05 = 63,396.58 : x
  2. Step 2: Convert to fraction form
    111,143.38/153,376.05 = 63,396.58/x
  3. Step 3: Cross multiply
    111,143.38x = 153,376.05 × 63,396.58
  4. Step 4: Simplify right side
    111,143.38x = 9,723,517,023.91
  5. Step 5: Solve for x
    x = 9,723,517,023.91/111,143.38
  6. Step 6: Final answer
    x = 87,486.25

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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.