Home / 121,724.48-168,026.68-108,955.16

Finding the Fourth Proportional to 121,724.48, 168,026.68 and 108,955.16

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Solution

The fourth proportional to 121,724.48, 168,026.68 and 108,955.16 is: 150,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,724.48 : 168,026.68 = 108,955.16 : x
  2. Step 2: Convert to fraction form
    121,724.48/168,026.68 = 108,955.16/x
  3. Step 3: Cross multiply
    121,724.48x = 168,026.68 × 108,955.16
  4. Step 4: Simplify right side
    121,724.48x = 18,307,373,803.67
  5. Step 5: Solve for x
    x = 18,307,373,803.67/121,724.48
  6. Step 6: Final answer
    x = 150,400.10

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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.