Home / 121,429.16-167,568.31-66,981.20

Finding the Fourth Proportional to 121,429.16, 167,568.31 and 66,981.20

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Solution

The fourth proportional to 121,429.16, 167,568.31 and 66,981.20 is: 92,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,429.16 : 167,568.31 = 66,981.20 : x
  2. Step 2: Convert to fraction form
    121,429.16/167,568.31 = 66,981.20/x
  3. Step 3: Cross multiply
    121,429.16x = 167,568.31 × 66,981.20
  4. Step 4: Simplify right side
    121,429.16x = 11,223,927,074.87
  5. Step 5: Solve for x
    x = 11,223,927,074.87/121,429.16
  6. Step 6: Final answer
    x = 92,431.89

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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.