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Finding the Fourth Proportional to 189,020.96, 260,794.80 and 112,476.08

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Solution

The fourth proportional to 189,020.96, 260,794.80 and 112,476.08 is: 155,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,020.96 : 260,794.80 = 112,476.08 : x
  2. Step 2: Convert to fraction form
    189,020.96/260,794.80 = 112,476.08/x
  3. Step 3: Cross multiply
    189,020.96x = 260,794.80 × 112,476.08
  4. Step 4: Simplify right side
    189,020.96x = 29,333,176,788.38
  5. Step 5: Solve for x
    x = 29,333,176,788.38/189,020.96
  6. Step 6: Final answer
    x = 155,184.78

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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.