Home / 158,425.47-218,618.78-90,439.74

Finding the Fourth Proportional to 158,425.47, 218,618.78 and 90,439.74

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Solution

The fourth proportional to 158,425.47, 218,618.78 and 90,439.74 is: 124,802.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,425.47 : 218,618.78 = 90,439.74 : x
  2. Step 2: Convert to fraction form
    158,425.47/218,618.78 = 90,439.74/x
  3. Step 3: Cross multiply
    158,425.47x = 218,618.78 × 90,439.74
  4. Step 4: Simplify right side
    158,425.47x = 19,771,825,170.12
  5. Step 5: Solve for x
    x = 19,771,825,170.12/158,425.47
  6. Step 6: Final answer
    x = 124,802.06

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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.