Home / 124,909.14-172,378.68-68,320.50

Finding the Fourth Proportional to 124,909.14, 172,378.68 and 68,320.50

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Solution

The fourth proportional to 124,909.14, 172,378.68 and 68,320.50 is: 94,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,909.14 : 172,378.68 = 68,320.50 : x
  2. Step 2: Convert to fraction form
    124,909.14/172,378.68 = 68,320.50/x
  3. Step 3: Cross multiply
    124,909.14x = 172,378.68 × 68,320.50
  4. Step 4: Simplify right side
    124,909.14x = 11,776,997,606.94
  5. Step 5: Solve for x
    x = 11,776,997,606.94/124,909.14
  6. Step 6: Final answer
    x = 94,284.51

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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.