Home / 124,695.20-186,837.60-72,012.80

Finding the Fourth Proportional to 124,695.20, 186,837.60 and 72,012.80

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Solution

The fourth proportional to 124,695.20, 186,837.60 and 72,012.80 is: 107,900.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,695.20 : 186,837.60 = 72,012.80 : x
  2. Step 2: Convert to fraction form
    124,695.20/186,837.60 = 72,012.80/x
  3. Step 3: Cross multiply
    124,695.20x = 186,837.60 × 72,012.80
  4. Step 4: Simplify right side
    124,695.20x = 13,454,698,721.28
  5. Step 5: Solve for x
    x = 13,454,698,721.28/124,695.20
  6. Step 6: Final answer
    x = 107,900.69

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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.