Home / 95,728.86-143,280.24-70,421.61

Finding the Fourth Proportional to 95,728.86, 143,280.24 and 70,421.61

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Solution

The fourth proportional to 95,728.86, 143,280.24 and 70,421.61 is: 105,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,728.86 : 143,280.24 = 70,421.61 : x
  2. Step 2: Convert to fraction form
    95,728.86/143,280.24 = 70,421.61/x
  3. Step 3: Cross multiply
    95,728.86x = 143,280.24 × 70,421.61
  4. Step 4: Simplify right side
    95,728.86x = 10,090,025,181.99
  5. Step 5: Solve for x
    x = 10,090,025,181.99/95,728.86
  6. Step 6: Final answer
    x = 105,402.12

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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.