Home / 151,630.12-209,251.74-87,987.16

Finding the Fourth Proportional to 151,630.12, 209,251.74 and 87,987.16

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Solution

The fourth proportional to 151,630.12, 209,251.74 and 87,987.16 is: 121,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,630.12 : 209,251.74 = 87,987.16 : x
  2. Step 2: Convert to fraction form
    151,630.12/209,251.74 = 87,987.16/x
  3. Step 3: Cross multiply
    151,630.12x = 209,251.74 × 87,987.16
  4. Step 4: Simplify right side
    151,630.12x = 18,411,466,327.66
  5. Step 5: Solve for x
    x = 18,411,466,327.66/151,630.12
  6. Step 6: Final answer
    x = 121,423.54

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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.