Home / 158,408.76-218,550.26-90,376.86

Finding the Fourth Proportional to 158,408.76, 218,550.26 and 90,376.86

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Solution

The fourth proportional to 158,408.76, 218,550.26 and 90,376.86 is: 124,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,408.76 : 218,550.26 = 90,376.86 : x
  2. Step 2: Convert to fraction form
    158,408.76/218,550.26 = 90,376.86/x
  3. Step 3: Cross multiply
    158,408.76x = 218,550.26 × 90,376.86
  4. Step 4: Simplify right side
    158,408.76x = 19,751,886,250.98
  5. Step 5: Solve for x
    x = 19,751,886,250.98/158,408.76
  6. Step 6: Final answer
    x = 124,689.36

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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.