Home / 145,942.30-218,854.86-71,040.61

Finding the Fourth Proportional to 145,942.30, 218,854.86 and 71,040.61

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Solution

The fourth proportional to 145,942.30, 218,854.86 and 71,040.61 is: 106,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,942.30 : 218,854.86 = 71,040.61 : x
  2. Step 2: Convert to fraction form
    145,942.30/218,854.86 = 71,040.61/x
  3. Step 3: Cross multiply
    145,942.30x = 218,854.86 × 71,040.61
  4. Step 4: Simplify right side
    145,942.30x = 15,547,582,755.86
  5. Step 5: Solve for x
    x = 15,547,582,755.86/145,942.30
  6. Step 6: Final answer
    x = 106,532.40

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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.