Home / 119,109.20-178,404.60-72,280.40

Finding the Fourth Proportional to 119,109.20, 178,404.60 and 72,280.40

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Solution

The fourth proportional to 119,109.20, 178,404.60 and 72,280.40 is: 108,263.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,109.20 : 178,404.60 = 72,280.40 : x
  2. Step 2: Convert to fraction form
    119,109.20/178,404.60 = 72,280.40/x
  3. Step 3: Cross multiply
    119,109.20x = 178,404.60 × 72,280.40
  4. Step 4: Simplify right side
    119,109.20x = 12,895,155,849.84
  5. Step 5: Solve for x
    x = 12,895,155,849.84/119,109.20
  6. Step 6: Final answer
    x = 108,263.31

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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.