Home / 115,931.30-173,896.95-80,501.90

Finding the Fourth Proportional to 115,931.30, 173,896.95 and 80,501.90

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Solution

The fourth proportional to 115,931.30, 173,896.95 and 80,501.90 is: 120,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,931.30 : 173,896.95 = 80,501.90 : x
  2. Step 2: Convert to fraction form
    115,931.30/173,896.95 = 80,501.90/x
  3. Step 3: Cross multiply
    115,931.30x = 173,896.95 × 80,501.90
  4. Step 4: Simplify right side
    115,931.30x = 13,999,034,879.21
  5. Step 5: Solve for x
    x = 13,999,034,879.21/115,931.30
  6. Step 6: Final answer
    x = 120,752.85

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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.