Home / 121,862.40-168,168.96-68,146.80

Finding the Fourth Proportional to 121,862.40, 168,168.96 and 68,146.80

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Solution

The fourth proportional to 121,862.40, 168,168.96 and 68,146.80 is: 94,041.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,862.40 : 168,168.96 = 68,146.80 : x
  2. Step 2: Convert to fraction form
    121,862.40/168,168.96 = 68,146.80/x
  3. Step 3: Cross multiply
    121,862.40x = 168,168.96 × 68,146.80
  4. Step 4: Simplify right side
    121,862.40x = 11,460,176,483.33
  5. Step 5: Solve for x
    x = 11,460,176,483.33/121,862.40
  6. Step 6: Final answer
    x = 94,041.94

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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.