Home / 125,097.12-187,688.88-78,294.24

Finding the Fourth Proportional to 125,097.12, 187,688.88 and 78,294.24

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Solution

The fourth proportional to 125,097.12, 187,688.88 and 78,294.24 is: 117,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,097.12 : 187,688.88 = 78,294.24 : x
  2. Step 2: Convert to fraction form
    125,097.12/187,688.88 = 78,294.24/x
  3. Step 3: Cross multiply
    125,097.12x = 187,688.88 × 78,294.24
  4. Step 4: Simplify right side
    125,097.12x = 14,694,958,216.05
  5. Step 5: Solve for x
    x = 14,694,958,216.05/125,097.12
  6. Step 6: Final answer
    x = 117,468.40

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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.