Home / 105,195.15-145,170.47-57,449.91

Finding the Fourth Proportional to 105,195.15, 145,170.47 and 57,449.91

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Solution

The fourth proportional to 105,195.15, 145,170.47 and 57,449.91 is: 79,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,195.15 : 145,170.47 = 57,449.91 : x
  2. Step 2: Convert to fraction form
    105,195.15/145,170.47 = 57,449.91/x
  3. Step 3: Cross multiply
    105,195.15x = 145,170.47 × 57,449.91
  4. Step 4: Simplify right side
    105,195.15x = 8,340,029,423.06
  5. Step 5: Solve for x
    x = 8,340,029,423.06/105,195.15
  6. Step 6: Final answer
    x = 79,281.50

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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.