Home / 105,614.12-158,408.85-42,431.69

Finding the Fourth Proportional to 105,614.12, 158,408.85 and 42,431.69

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Solution

The fourth proportional to 105,614.12, 158,408.85 and 42,431.69 is: 63,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,614.12 : 158,408.85 = 42,431.69 : x
  2. Step 2: Convert to fraction form
    105,614.12/158,408.85 = 42,431.69/x
  3. Step 3: Cross multiply
    105,614.12x = 158,408.85 × 42,431.69
  4. Step 4: Simplify right side
    105,614.12x = 6,721,555,216.46
  5. Step 5: Solve for x
    x = 6,721,555,216.46/105,614.12
  6. Step 6: Final answer
    x = 63,642.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.