Home / 158,079.77-218,144.67-90,118.64

Finding the Fourth Proportional to 158,079.77, 218,144.67 and 90,118.64

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Solution

The fourth proportional to 158,079.77, 218,144.67 and 90,118.64 is: 124,360.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,079.77 : 218,144.67 = 90,118.64 : x
  2. Step 2: Convert to fraction form
    158,079.77/218,144.67 = 90,118.64/x
  3. Step 3: Cross multiply
    158,079.77x = 218,144.67 × 90,118.64
  4. Step 4: Simplify right side
    158,079.77x = 19,658,900,983.65
  5. Step 5: Solve for x
    x = 19,658,900,983.65/158,079.77
  6. Step 6: Final answer
    x = 124,360.64

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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.