Home / 158,345.75-218,514.94-90,384.28

Finding the Fourth Proportional to 158,345.75, 218,514.94 and 90,384.28

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Solution

The fourth proportional to 158,345.75, 218,514.94 and 90,384.28 is: 124,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,345.75 : 218,514.94 = 90,384.28 : x
  2. Step 2: Convert to fraction form
    158,345.75/218,514.94 = 90,384.28/x
  3. Step 3: Cross multiply
    158,345.75x = 218,514.94 × 90,384.28
  4. Step 4: Simplify right side
    158,345.75x = 19,750,314,748.90
  5. Step 5: Solve for x
    x = 19,750,314,748.90/158,345.75
  6. Step 6: Final answer
    x = 124,729.05

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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.