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Finding the Fourth Proportional to 159,116.76, 219,586.74 and 87,502.20

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Solution

The fourth proportional to 159,116.76, 219,586.74 and 87,502.20 is: 120,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,116.76 : 219,586.74 = 87,502.20 : x
  2. Step 2: Convert to fraction form
    159,116.76/219,586.74 = 87,502.20/x
  3. Step 3: Cross multiply
    159,116.76x = 219,586.74 × 87,502.20
  4. Step 4: Simplify right side
    159,116.76x = 19,214,322,840.83
  5. Step 5: Solve for x
    x = 19,214,322,840.83/159,116.76
  6. Step 6: Final answer
    x = 120,756.12

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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.