Home / 105,249.06-145,243.53-57,502.40

Finding the Fourth Proportional to 105,249.06, 145,243.53 and 57,502.40

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Solution

The fourth proportional to 105,249.06, 145,243.53 and 57,502.40 is: 79,353.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,249.06 : 145,243.53 = 57,502.40 : x
  2. Step 2: Convert to fraction form
    105,249.06/145,243.53 = 57,502.40/x
  3. Step 3: Cross multiply
    105,249.06x = 145,243.53 × 57,502.40
  4. Step 4: Simplify right side
    105,249.06x = 8,351,850,833.25
  5. Step 5: Solve for x
    x = 8,351,850,833.25/105,249.06
  6. Step 6: Final answer
    x = 79,353.21

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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.