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Finding the Fourth Proportional to 110,217.80, 152,089.90 and 61,821.64

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Solution

The fourth proportional to 110,217.80, 152,089.90 and 61,821.64 is: 85,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,217.80 : 152,089.90 = 61,821.64 : x
  2. Step 2: Convert to fraction form
    110,217.80/152,089.90 = 61,821.64/x
  3. Step 3: Cross multiply
    110,217.80x = 152,089.90 × 61,821.64
  4. Step 4: Simplify right side
    110,217.80x = 9,402,447,045.44
  5. Step 5: Solve for x
    x = 9,402,447,045.44/110,217.80
  6. Step 6: Final answer
    x = 85,307.88

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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.