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Finding the Fourth Proportional to 121,059.60, 181,621.80 and 108,002.40

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Solution

The fourth proportional to 121,059.60, 181,621.80 and 108,002.40 is: 162,032.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,059.60 : 181,621.80 = 108,002.40 : x
  2. Step 2: Convert to fraction form
    121,059.60/181,621.80 = 108,002.40/x
  3. Step 3: Cross multiply
    121,059.60x = 181,621.80 × 108,002.40
  4. Step 4: Simplify right side
    121,059.60x = 19,615,590,292.32
  5. Step 5: Solve for x
    x = 19,615,590,292.32/121,059.60
  6. Step 6: Final answer
    x = 162,032.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.