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Finding the Fourth Proportional to 159,518.30, 220,145.04 and 87,898.30

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Solution

The fourth proportional to 159,518.30, 220,145.04 and 87,898.30 is: 121,305.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,518.30 : 220,145.04 = 87,898.30 : x
  2. Step 2: Convert to fraction form
    159,518.30/220,145.04 = 87,898.30/x
  3. Step 3: Cross multiply
    159,518.30x = 220,145.04 × 87,898.30
  4. Step 4: Simplify right side
    159,518.30x = 19,350,374,219.07
  5. Step 5: Solve for x
    x = 19,350,374,219.07/159,518.30
  6. Step 6: Final answer
    x = 121,305.05

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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.