Home / 153,479.10-229,793.56-78,437.67

Finding the Fourth Proportional to 153,479.10, 229,793.56 and 78,437.67

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Solution

The fourth proportional to 153,479.10, 229,793.56 and 78,437.67 is: 117,439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,479.10 : 229,793.56 = 78,437.67 : x
  2. Step 2: Convert to fraction form
    153,479.10/229,793.56 = 78,437.67/x
  3. Step 3: Cross multiply
    153,479.10x = 229,793.56 × 78,437.67
  4. Step 4: Simplify right side
    153,479.10x = 18,024,470,369.59
  5. Step 5: Solve for x
    x = 18,024,470,369.59/153,479.10
  6. Step 6: Final answer
    x = 117,439.25

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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.