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Finding the Fourth Proportional to 94,436.80, 142,000.80 and 79,230.40

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Solution

The fourth proportional to 94,436.80, 142,000.80 and 79,230.40 is: 119,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,436.80 : 142,000.80 = 79,230.40 : x
  2. Step 2: Convert to fraction form
    94,436.80/142,000.80 = 79,230.40/x
  3. Step 3: Cross multiply
    94,436.80x = 142,000.80 × 79,230.40
  4. Step 4: Simplify right side
    94,436.80x = 11,250,780,184.32
  5. Step 5: Solve for x
    x = 11,250,780,184.32/94,436.80
  6. Step 6: Final answer
    x = 119,135.55

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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.