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Finding the Fourth Proportional to 189,010.96, 260,781 and 112,466.08

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Solution

The fourth proportional to 189,010.96, 260,781 and 112,466.08 is: 155,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,010.96 : 260,781 = 112,466.08 : x
  2. Step 2: Convert to fraction form
    189,010.96/260,781 = 112,466.08/x
  3. Step 3: Cross multiply
    189,010.96x = 260,781 × 112,466.08
  4. Step 4: Simplify right side
    189,010.96x = 29,329,016,808.48
  5. Step 5: Solve for x
    x = 29,329,016,808.48/189,010.96
  6. Step 6: Final answer
    x = 155,170.98

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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.