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Finding the Fourth Proportional to 159,176.99, 219,659.61 and 87,557

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Solution

The fourth proportional to 159,176.99, 219,659.61 and 87,557 is: 120,826.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,176.99 : 219,659.61 = 87,557 : x
  2. Step 2: Convert to fraction form
    159,176.99/219,659.61 = 87,557/x
  3. Step 3: Cross multiply
    159,176.99x = 219,659.61 × 87,557
  4. Step 4: Simplify right side
    159,176.99x = 19,232,736,472.77
  5. Step 5: Solve for x
    x = 19,232,736,472.77/159,176.99
  6. Step 6: Final answer
    x = 120,826.11

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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.