Home / 105,505.24-145,599.04-65,217.97

Finding the Fourth Proportional to 105,505.24, 145,599.04 and 65,217.97

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Solution

The fourth proportional to 105,505.24, 145,599.04 and 65,217.97 is: 90,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,505.24 : 145,599.04 = 65,217.97 : x
  2. Step 2: Convert to fraction form
    105,505.24/145,599.04 = 65,217.97/x
  3. Step 3: Cross multiply
    105,505.24x = 145,599.04 × 65,217.97
  4. Step 4: Simplify right side
    105,505.24x = 9,495,672,768.66
  5. Step 5: Solve for x
    x = 9,495,672,768.66/105,505.24
  6. Step 6: Final answer
    x = 90,001.91

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1.5x scale

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.