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Finding the Fourth Proportional to 121,173.60, 181,587.60 and 89,335.20

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Solution

The fourth proportional to 121,173.60, 181,587.60 and 89,335.20 is: 133,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,173.60 : 181,587.60 = 89,335.20 : x
  2. Step 2: Convert to fraction form
    121,173.60/181,587.60 = 89,335.20/x
  3. Step 3: Cross multiply
    121,173.60x = 181,587.60 × 89,335.20
  4. Step 4: Simplify right side
    121,173.60x = 16,222,164,563.52
  5. Step 5: Solve for x
    x = 16,222,164,563.52/121,173.60
  6. Step 6: Final answer
    x = 133,875.40

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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.