Home / 191,081.18-286,624.61-72,759.08

Finding the Fourth Proportional to 191,081.18, 286,624.61 and 72,759.08

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Solution

The fourth proportional to 191,081.18, 286,624.61 and 72,759.08 is: 109,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,081.18 : 286,624.61 = 72,759.08 : x
  2. Step 2: Convert to fraction form
    191,081.18/286,624.61 = 72,759.08/x
  3. Step 3: Cross multiply
    191,081.18x = 286,624.61 × 72,759.08
  4. Step 4: Simplify right side
    191,081.18x = 20,854,542,928.96
  5. Step 5: Solve for x
    x = 20,854,542,928.96/191,081.18
  6. Step 6: Final answer
    x = 109,139.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.