Home / 139,500.30-209,250.45-83,513.10

Finding the Fourth Proportional to 139,500.30, 209,250.45 and 83,513.10

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Solution

The fourth proportional to 139,500.30, 209,250.45 and 83,513.10 is: 125,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,500.30 : 209,250.45 = 83,513.10 : x
  2. Step 2: Convert to fraction form
    139,500.30/209,250.45 = 83,513.10/x
  3. Step 3: Cross multiply
    139,500.30x = 209,250.45 × 83,513.10
  4. Step 4: Simplify right side
    139,500.30x = 17,475,153,755.90
  5. Step 5: Solve for x
    x = 17,475,153,755.90/139,500.30
  6. Step 6: Final answer
    x = 125,269.65

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1.5x scale

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.