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Finding the Fourth Proportional to 122,358.88, 183,590.16 and 66,890.08

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Solution

The fourth proportional to 122,358.88, 183,590.16 and 66,890.08 is: 100,363.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,358.88 : 183,590.16 = 66,890.08 : x
  2. Step 2: Convert to fraction form
    122,358.88/183,590.16 = 66,890.08/x
  3. Step 3: Cross multiply
    122,358.88x = 183,590.16 × 66,890.08
  4. Step 4: Simplify right side
    122,358.88x = 12,280,360,489.61
  5. Step 5: Solve for x
    x = 12,280,360,489.61/122,358.88
  6. Step 6: Final answer
    x = 100,363.46

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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.