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Finding the Fourth Proportional to 125,380.56, 188,071.48 and 42,275.28

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Solution

The fourth proportional to 125,380.56, 188,071.48 and 42,275.28 is: 63,413.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,380.56 : 188,071.48 = 42,275.28 : x
  2. Step 2: Convert to fraction form
    125,380.56/188,071.48 = 42,275.28/x
  3. Step 3: Cross multiply
    125,380.56x = 188,071.48 × 42,275.28
  4. Step 4: Simplify right side
    125,380.56x = 7,950,774,477.01
  5. Step 5: Solve for x
    x = 7,950,774,477.01/125,380.56
  6. Step 6: Final answer
    x = 63,413.14

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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.