Home / 123,494.34-170,421.12-66,905.58

Finding the Fourth Proportional to 123,494.34, 170,421.12 and 66,905.58

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Solution

The fourth proportional to 123,494.34, 170,421.12 and 66,905.58 is: 92,329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,494.34 : 170,421.12 = 66,905.58 : x
  2. Step 2: Convert to fraction form
    123,494.34/170,421.12 = 66,905.58/x
  3. Step 3: Cross multiply
    123,494.34x = 170,421.12 × 66,905.58
  4. Step 4: Simplify right side
    123,494.34x = 11,402,123,877.85
  5. Step 5: Solve for x
    x = 11,402,123,877.85/123,494.34
  6. Step 6: Final answer
    x = 92,329.12

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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.