Home / 120,461.04-166,085.10-77,364.45

Finding the Fourth Proportional to 120,461.04, 166,085.10 and 77,364.45

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Solution

The fourth proportional to 120,461.04, 166,085.10 and 77,364.45 is: 106,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,461.04 : 166,085.10 = 77,364.45 : x
  2. Step 2: Convert to fraction form
    120,461.04/166,085.10 = 77,364.45/x
  3. Step 3: Cross multiply
    120,461.04x = 166,085.10 × 77,364.45
  4. Step 4: Simplify right side
    120,461.04x = 12,849,082,414.70
  5. Step 5: Solve for x
    x = 12,849,082,414.70/120,461.04
  6. Step 6: Final answer
    x = 106,665.88

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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.