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Finding the Fourth Proportional to 124,219.92, 186,303.71 and 39,987.60

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Solution

The fourth proportional to 124,219.92, 186,303.71 and 39,987.60 is: 59,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,219.92 : 186,303.71 = 39,987.60 : x
  2. Step 2: Convert to fraction form
    124,219.92/186,303.71 = 39,987.60/x
  3. Step 3: Cross multiply
    124,219.92x = 186,303.71 × 39,987.60
  4. Step 4: Simplify right side
    124,219.92x = 7,449,838,234.00
  5. Step 5: Solve for x
    x = 7,449,838,234.00/124,219.92
  6. Step 6: Final answer
    x = 59,972.98

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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.