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Finding the Fourth Proportional to 159,511.50, 220,125.95 and 86,914.04

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Solution

The fourth proportional to 159,511.50, 220,125.95 and 86,914.04 is: 119,941.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,511.50 : 220,125.95 = 86,914.04 : x
  2. Step 2: Convert to fraction form
    159,511.50/220,125.95 = 86,914.04/x
  3. Step 3: Cross multiply
    159,511.50x = 220,125.95 × 86,914.04
  4. Step 4: Simplify right side
    159,511.50x = 19,132,034,088.14
  5. Step 5: Solve for x
    x = 19,132,034,088.14/159,511.50
  6. Step 6: Final answer
    x = 119,941.41

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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.