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Finding the Fourth Proportional to 125,376.56, 188,065.48 and 42,271.28

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Solution

The fourth proportional to 125,376.56, 188,065.48 and 42,271.28 is: 63,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,376.56 : 188,065.48 = 42,271.28 : x
  2. Step 2: Convert to fraction form
    125,376.56/188,065.48 = 42,271.28/x
  3. Step 3: Cross multiply
    125,376.56x = 188,065.48 × 42,271.28
  4. Step 4: Simplify right side
    125,376.56x = 7,949,768,563.41
  5. Step 5: Solve for x
    x = 7,949,768,563.41/125,376.56
  6. Step 6: Final answer
    x = 63,407.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.