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Finding the Fourth Proportional to 159,417.60, 220,020.48 and 121,114.32

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Solution

The fourth proportional to 159,417.60, 220,020.48 and 121,114.32 is: 167,156.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,417.60 : 220,020.48 = 121,114.32 : x
  2. Step 2: Convert to fraction form
    159,417.60/220,020.48 = 121,114.32/x
  3. Step 3: Cross multiply
    159,417.60x = 220,020.48 × 121,114.32
  4. Step 4: Simplify right side
    159,417.60x = 26,647,630,821.27
  5. Step 5: Solve for x
    x = 26,647,630,821.27/159,417.60
  6. Step 6: Final answer
    x = 167,156.14

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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.