Home / 124,078.10-186,117.15-74,311.70

Finding the Fourth Proportional to 124,078.10, 186,117.15 and 74,311.70

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Solution

The fourth proportional to 124,078.10, 186,117.15 and 74,311.70 is: 111,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,078.10 : 186,117.15 = 74,311.70 : x
  2. Step 2: Convert to fraction form
    124,078.10/186,117.15 = 74,311.70/x
  3. Step 3: Cross multiply
    124,078.10x = 186,117.15 × 74,311.70
  4. Step 4: Simplify right side
    124,078.10x = 13,830,681,815.66
  5. Step 5: Solve for x
    x = 13,830,681,815.66/124,078.10
  6. Step 6: Final answer
    x = 111,467.55

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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.