Home / 158,869.50-219,241.42-87,251

Finding the Fourth Proportional to 158,869.50, 219,241.42 and 87,251

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Solution

The fourth proportional to 158,869.50, 219,241.42 and 87,251 is: 120,407.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,869.50 : 219,241.42 = 87,251 : x
  2. Step 2: Convert to fraction form
    158,869.50/219,241.42 = 87,251/x
  3. Step 3: Cross multiply
    158,869.50x = 219,241.42 × 87,251
  4. Step 4: Simplify right side
    158,869.50x = 19,129,033,136.42
  5. Step 5: Solve for x
    x = 19,129,033,136.42/158,869.50
  6. Step 6: Final answer
    x = 120,407.21

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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.