Home / 139,867.76-209,984.58-83,045.40

Finding the Fourth Proportional to 139,867.76, 209,984.58 and 83,045.40

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Solution

The fourth proportional to 139,867.76, 209,984.58 and 83,045.40 is: 124,676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,867.76 : 209,984.58 = 83,045.40 : x
  2. Step 2: Convert to fraction form
    139,867.76/209,984.58 = 83,045.40/x
  3. Step 3: Cross multiply
    139,867.76x = 209,984.58 × 83,045.40
  4. Step 4: Simplify right side
    139,867.76x = 17,438,253,833.65
  5. Step 5: Solve for x
    x = 17,438,253,833.65/139,867.76
  6. Step 6: Final answer
    x = 124,676.72

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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.