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Finding the Fourth Proportional to 158,630.32, 218,909.64 and 87,010.66

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Solution

The fourth proportional to 158,630.32, 218,909.64 and 87,010.66 is: 120,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,630.32 : 218,909.64 = 87,010.66 : x
  2. Step 2: Convert to fraction form
    158,630.32/218,909.64 = 87,010.66/x
  3. Step 3: Cross multiply
    158,630.32x = 218,909.64 × 87,010.66
  4. Step 4: Simplify right side
    158,630.32x = 19,047,472,256.76
  5. Step 5: Solve for x
    x = 19,047,472,256.76/158,630.32
  6. Step 6: Final answer
    x = 120,074.60

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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.