Home / 121,441.60-168,149.28-112,110.40

Finding the Fourth Proportional to 121,441.60, 168,149.28 and 112,110.40

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Solution

The fourth proportional to 121,441.60, 168,149.28 and 112,110.40 is: 155,229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,441.60 : 168,149.28 = 112,110.40 : x
  2. Step 2: Convert to fraction form
    121,441.60/168,149.28 = 112,110.40/x
  3. Step 3: Cross multiply
    121,441.60x = 168,149.28 × 112,110.40
  4. Step 4: Simplify right side
    121,441.60x = 18,851,283,040.51
  5. Step 5: Solve for x
    x = 18,851,283,040.51/121,441.60
  6. Step 6: Final answer
    x = 155,229.21

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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.