Home / 123,500.50-170,430.85-66,911.87

Finding the Fourth Proportional to 123,500.50, 170,430.85 and 66,911.87

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Solution

The fourth proportional to 123,500.50, 170,430.85 and 66,911.87 is: 92,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,500.50 : 170,430.85 = 66,911.87 : x
  2. Step 2: Convert to fraction form
    123,500.50/170,430.85 = 66,911.87/x
  3. Step 3: Cross multiply
    123,500.50x = 170,430.85 × 66,911.87
  4. Step 4: Simplify right side
    123,500.50x = 11,403,846,879.19
  5. Step 5: Solve for x
    x = 11,403,846,879.19/123,500.50
  6. Step 6: Final answer
    x = 92,338.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.