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Finding the Fourth Proportional to 159,030.73, 219,468.18 and 87,416.20

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Solution

The fourth proportional to 159,030.73, 219,468.18 and 87,416.20 is: 120,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,030.73 : 219,468.18 = 87,416.20 : x
  2. Step 2: Convert to fraction form
    159,030.73/219,468.18 = 87,416.20/x
  3. Step 3: Cross multiply
    159,030.73x = 219,468.18 × 87,416.20
  4. Step 4: Simplify right side
    159,030.73x = 19,185,074,316.52
  5. Step 5: Solve for x
    x = 19,185,074,316.52/159,030.73
  6. Step 6: Final answer
    x = 120,637.53

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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.