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Finding the Fourth Proportional to 123,902.10, 186,686.09 and 112,069.07

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Solution

The fourth proportional to 123,902.10, 186,686.09 and 112,069.07 is: 168,856.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,902.10 : 186,686.09 = 112,069.07 : x
  2. Step 2: Convert to fraction form
    123,902.10/186,686.09 = 112,069.07/x
  3. Step 3: Cross multiply
    123,902.10x = 186,686.09 × 112,069.07
  4. Step 4: Simplify right side
    123,902.10x = 20,921,734,994.46
  5. Step 5: Solve for x
    x = 20,921,734,994.46/123,902.10
  6. Step 6: Final answer
    x = 168,856.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.