Home / 158,138.24-218,228.85-90,153.05

Finding the Fourth Proportional to 158,138.24, 218,228.85 and 90,153.05

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Solution

The fourth proportional to 158,138.24, 218,228.85 and 90,153.05 is: 124,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,138.24 : 218,228.85 = 90,153.05 : x
  2. Step 2: Convert to fraction form
    158,138.24/218,228.85 = 90,153.05/x
  3. Step 3: Cross multiply
    158,138.24x = 218,228.85 × 90,153.05
  4. Step 4: Simplify right side
    158,138.24x = 19,673,995,334.35
  5. Step 5: Solve for x
    x = 19,673,995,334.35/158,138.24
  6. Step 6: Final answer
    x = 124,410.11

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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.