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Finding the Fourth Proportional to 124,858, 187,287.18 and 50,986

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Solution

The fourth proportional to 124,858, 187,287.18 and 50,986 is: 76,479.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,858 : 187,287.18 = 50,986 : x
  2. Step 2: Convert to fraction form
    124,858/187,287.18 = 50,986/x
  3. Step 3: Cross multiply
    124,858x = 187,287.18 × 50,986
  4. Step 4: Simplify right side
    124,858x = 9,549,024,159.48
  5. Step 5: Solve for x
    x = 9,549,024,159.48/124,858
  6. Step 6: Final answer
    x = 76,479.07

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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.