Home / 121,901.46-168,241.95-74,145.57

Finding the Fourth Proportional to 121,901.46, 168,241.95 and 74,145.57

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Solution

The fourth proportional to 121,901.46, 168,241.95 and 74,145.57 is: 102,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,901.46 : 168,241.95 = 74,145.57 : x
  2. Step 2: Convert to fraction form
    121,901.46/168,241.95 = 74,145.57/x
  3. Step 3: Cross multiply
    121,901.46x = 168,241.95 × 74,145.57
  4. Step 4: Simplify right side
    121,901.46x = 12,474,395,280.66
  5. Step 5: Solve for x
    x = 12,474,395,280.66/121,901.46
  6. Step 6: Final answer
    x = 102,331.80

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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.