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Finding the Fourth Proportional to 159,148.56, 219,630 and 87,533.76

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Solution

The fourth proportional to 159,148.56, 219,630 and 87,533.76 is: 120,799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,148.56 : 219,630 = 87,533.76 : x
  2. Step 2: Convert to fraction form
    159,148.56/219,630 = 87,533.76/x
  3. Step 3: Cross multiply
    159,148.56x = 219,630 × 87,533.76
  4. Step 4: Simplify right side
    159,148.56x = 19,225,039,708.80
  5. Step 5: Solve for x
    x = 19,225,039,708.80/159,148.56
  6. Step 6: Final answer
    x = 120,799.33

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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.