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Finding the Fourth Proportional to 112,000.80, 154,561.04 and 61,699.80

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Solution

The fourth proportional to 112,000.80, 154,561.04 and 61,699.80 is: 85,145.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,000.80 : 154,561.04 = 61,699.80 : x
  2. Step 2: Convert to fraction form
    112,000.80/154,561.04 = 61,699.80/x
  3. Step 3: Cross multiply
    112,000.80x = 154,561.04 × 61,699.80
  4. Step 4: Simplify right side
    112,000.80x = 9,536,384,947.29
  5. Step 5: Solve for x
    x = 9,536,384,947.29/112,000.80
  6. Step 6: Final answer
    x = 85,145.69

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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.