Home / 151,629.60-209,259.18-87,967.38

Finding the Fourth Proportional to 151,629.60, 209,259.18 and 87,967.38

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Solution

The fourth proportional to 151,629.60, 209,259.18 and 87,967.38 is: 121,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,629.60 : 209,259.18 = 87,967.38 : x
  2. Step 2: Convert to fraction form
    151,629.60/209,259.18 = 87,967.38/x
  3. Step 3: Cross multiply
    151,629.60x = 209,259.18 × 87,967.38
  4. Step 4: Simplify right side
    151,629.60x = 18,407,981,805.55
  5. Step 5: Solve for x
    x = 18,407,981,805.55/151,629.60
  6. Step 6: Final answer
    x = 121,400.98

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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.