Home / 123,278.18-170,123.48-66,689.54

Finding the Fourth Proportional to 123,278.18, 170,123.48 and 66,689.54

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Solution

The fourth proportional to 123,278.18, 170,123.48 and 66,689.54 is: 92,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,278.18 : 170,123.48 = 66,689.54 : x
  2. Step 2: Convert to fraction form
    123,278.18/170,123.48 = 66,689.54/x
  3. Step 3: Cross multiply
    123,278.18x = 170,123.48 × 66,689.54
  4. Step 4: Simplify right side
    123,278.18x = 11,345,456,624.40
  5. Step 5: Solve for x
    x = 11,345,456,624.40/123,278.18
  6. Step 6: Final answer
    x = 92,031.34

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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.