Home / 89,667.20-123,794.08-79,702.40

Finding the Fourth Proportional to 89,667.20, 123,794.08 and 79,702.40

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Solution

The fourth proportional to 89,667.20, 123,794.08 and 79,702.40 is: 110,036.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,667.20 : 123,794.08 = 79,702.40 : x
  2. Step 2: Convert to fraction form
    89,667.20/123,794.08 = 79,702.40/x
  3. Step 3: Cross multiply
    89,667.20x = 123,794.08 × 79,702.40
  4. Step 4: Simplify right side
    89,667.20x = 9,866,685,281.79
  5. Step 5: Solve for x
    x = 9,866,685,281.79/89,667.20
  6. Step 6: Final answer
    x = 110,036.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.