Home / 121,740.18-168,002.28-68,027.46

Finding the Fourth Proportional to 121,740.18, 168,002.28 and 68,027.46

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Solution

The fourth proportional to 121,740.18, 168,002.28 and 68,027.46 is: 93,878.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,740.18 : 168,002.28 = 68,027.46 : x
  2. Step 2: Convert to fraction form
    121,740.18/168,002.28 = 68,027.46/x
  3. Step 3: Cross multiply
    121,740.18x = 168,002.28 × 68,027.46
  4. Step 4: Simplify right side
    121,740.18x = 11,428,768,382.61
  5. Step 5: Solve for x
    x = 11,428,768,382.61/121,740.18
  6. Step 6: Final answer
    x = 93,878.36

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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.