Home / 105,493.78-145,581.60-57,747.16

Finding the Fourth Proportional to 105,493.78, 145,581.60 and 57,747.16

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Solution

The fourth proportional to 105,493.78, 145,581.60 and 57,747.16 is: 79,691.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,493.78 : 145,581.60 = 57,747.16 : x
  2. Step 2: Convert to fraction form
    105,493.78/145,581.60 = 57,747.16/x
  3. Step 3: Cross multiply
    105,493.78x = 145,581.60 × 57,747.16
  4. Step 4: Simplify right side
    105,493.78x = 8,406,923,948.26
  5. Step 5: Solve for x
    x = 8,406,923,948.26/105,493.78
  6. Step 6: Final answer
    x = 79,691.18

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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.