Home / 158,270.18-218,433.64-90,271.56

Finding the Fourth Proportional to 158,270.18, 218,433.64 and 90,271.56

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Solution

The fourth proportional to 158,270.18, 218,433.64 and 90,271.56 is: 124,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,270.18 : 218,433.64 = 90,271.56 : x
  2. Step 2: Convert to fraction form
    158,270.18/218,433.64 = 90,271.56/x
  3. Step 3: Cross multiply
    158,270.18x = 218,433.64 × 90,271.56
  4. Step 4: Simplify right side
    158,270.18x = 19,718,345,439.28
  5. Step 5: Solve for x
    x = 19,718,345,439.28/158,270.18
  6. Step 6: Final answer
    x = 124,586.62

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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.