Home / 120,897.18-166,838.19-67,187.20

Finding the Fourth Proportional to 120,897.18, 166,838.19 and 67,187.20

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Solution

The fourth proportional to 120,897.18, 166,838.19 and 67,187.20 is: 92,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,897.18 : 166,838.19 = 67,187.20 : x
  2. Step 2: Convert to fraction form
    120,897.18/166,838.19 = 67,187.20/x
  3. Step 3: Cross multiply
    120,897.18x = 166,838.19 × 67,187.20
  4. Step 4: Simplify right side
    120,897.18x = 11,209,390,839.17
  5. Step 5: Solve for x
    x = 11,209,390,839.17/120,897.18
  6. Step 6: Final answer
    x = 92,718.38

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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.