Home / 121,995.19-168,357.17-68,280.11

Finding the Fourth Proportional to 121,995.19, 168,357.17 and 68,280.11

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Solution

The fourth proportional to 121,995.19, 168,357.17 and 68,280.11 is: 94,228.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,995.19 : 168,357.17 = 68,280.11 : x
  2. Step 2: Convert to fraction form
    121,995.19/168,357.17 = 68,280.11/x
  3. Step 3: Cross multiply
    121,995.19x = 168,357.17 × 68,280.11
  4. Step 4: Simplify right side
    121,995.19x = 11,495,445,415.80
  5. Step 5: Solve for x
    x = 11,495,445,415.80/121,995.19
  6. Step 6: Final answer
    x = 94,228.68

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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.