Home / 158,345.85-218,463.03-90,313.68

Finding the Fourth Proportional to 158,345.85, 218,463.03 and 90,313.68

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Solution

The fourth proportional to 158,345.85, 218,463.03 and 90,313.68 is: 124,601.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,345.85 : 218,463.03 = 90,313.68 : x
  2. Step 2: Convert to fraction form
    158,345.85/218,463.03 = 90,313.68/x
  3. Step 3: Cross multiply
    158,345.85x = 218,463.03 × 90,313.68
  4. Step 4: Simplify right side
    158,345.85x = 19,730,200,183.25
  5. Step 5: Solve for x
    x = 19,730,200,183.25/158,345.85
  6. Step 6: Final answer
    x = 124,601.94

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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.