Home / 145,941.30-218,853.36-71,039.61

Finding the Fourth Proportional to 145,941.30, 218,853.36 and 71,039.61

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Solution

The fourth proportional to 145,941.30, 218,853.36 and 71,039.61 is: 106,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,941.30 : 218,853.36 = 71,039.61 : x
  2. Step 2: Convert to fraction form
    145,941.30/218,853.36 = 71,039.61/x
  3. Step 3: Cross multiply
    145,941.30x = 218,853.36 × 71,039.61
  4. Step 4: Simplify right side
    145,941.30x = 15,547,257,341.59
  5. Step 5: Solve for x
    x = 15,547,257,341.59/145,941.30
  6. Step 6: Final answer
    x = 106,530.90

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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.