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Finding the Fourth Proportional to 112,290.88, 154,966.80 and 61,993.12

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Solution

The fourth proportional to 112,290.88, 154,966.80 and 61,993.12 is: 85,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,290.88 : 154,966.80 = 61,993.12 : x
  2. Step 2: Convert to fraction form
    112,290.88/154,966.80 = 61,993.12/x
  3. Step 3: Cross multiply
    112,290.88x = 154,966.80 × 61,993.12
  4. Step 4: Simplify right side
    112,290.88x = 9,606,875,428.42
  5. Step 5: Solve for x
    x = 9,606,875,428.42/112,290.88
  6. Step 6: Final answer
    x = 85,553.48

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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.