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Finding the Fourth Proportional to 125,438.95, 188,187.12 and 54,373.48

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Solution

The fourth proportional to 125,438.95, 188,187.12 and 54,373.48 is: 81,572.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,438.95 : 188,187.12 = 54,373.48 : x
  2. Step 2: Convert to fraction form
    125,438.95/188,187.12 = 54,373.48/x
  3. Step 3: Cross multiply
    125,438.95x = 188,187.12 × 54,373.48
  4. Step 4: Simplify right side
    125,438.95x = 10,232,388,605.58
  5. Step 5: Solve for x
    x = 10,232,388,605.58/125,438.95
  6. Step 6: Final answer
    x = 81,572.66

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1.5x scale

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.