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Finding the Fourth Proportional to 159,477.20, 220,088.48 and 87,857.20

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Solution

The fourth proportional to 159,477.20, 220,088.48 and 87,857.20 is: 121,248.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,477.20 : 220,088.48 = 87,857.20 : x
  2. Step 2: Convert to fraction form
    159,477.20/220,088.48 = 87,857.20/x
  3. Step 3: Cross multiply
    159,477.20x = 220,088.48 × 87,857.20
  4. Step 4: Simplify right side
    159,477.20x = 19,336,357,605.06
  5. Step 5: Solve for x
    x = 19,336,357,605.06/159,477.20
  6. Step 6: Final answer
    x = 121,248.41

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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.