Home / 119,266.20-178,640.10-72,437.40

Finding the Fourth Proportional to 119,266.20, 178,640.10 and 72,437.40

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Solution

The fourth proportional to 119,266.20, 178,640.10 and 72,437.40 is: 108,498.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,266.20 : 178,640.10 = 72,437.40 : x
  2. Step 2: Convert to fraction form
    119,266.20/178,640.10 = 72,437.40/x
  3. Step 3: Cross multiply
    119,266.20x = 178,640.10 × 72,437.40
  4. Step 4: Simplify right side
    119,266.20x = 12,940,224,379.74
  5. Step 5: Solve for x
    x = 12,940,224,379.74/119,266.20
  6. Step 6: Final answer
    x = 108,498.67

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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.