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Finding the Fourth Proportional to 105,254.65, 145,249.71 and 57,506.97

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Solution

The fourth proportional to 105,254.65, 145,249.71 and 57,506.97 is: 79,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,254.65 : 145,249.71 = 57,506.97 : x
  2. Step 2: Convert to fraction form
    105,254.65/145,249.71 = 57,506.97/x
  3. Step 3: Cross multiply
    105,254.65x = 145,249.71 × 57,506.97
  4. Step 4: Simplify right side
    105,254.65x = 8,352,869,989.23
  5. Step 5: Solve for x
    x = 8,352,869,989.23/105,254.65
  6. Step 6: Final answer
    x = 79,358.68

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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.