Home / 78,089.03-117,132.50-18,925.20

Finding the Fourth Proportional to 78,089.03, 117,132.50 and 18,925.20

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Solution

The fourth proportional to 78,089.03, 117,132.50 and 18,925.20 is: 28,387.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,089.03 : 117,132.50 = 18,925.20 : x
  2. Step 2: Convert to fraction form
    78,089.03/117,132.50 = 18,925.20/x
  3. Step 3: Cross multiply
    78,089.03x = 117,132.50 × 18,925.20
  4. Step 4: Simplify right side
    78,089.03x = 2,216,755,894.37
  5. Step 5: Solve for x
    x = 2,216,755,894.37/78,089.03
  6. Step 6: Final answer
    x = 28,387.55

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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.