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Finding the Fourth Proportional to 158,390.42, 218,594.48 and 90,417.62

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Solution

The fourth proportional to 158,390.42, 218,594.48 and 90,417.62 is: 124,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,390.42 : 218,594.48 = 90,417.62 : x
  2. Step 2: Convert to fraction form
    158,390.42/218,594.48 = 90,417.62/x
  3. Step 3: Cross multiply
    158,390.42x = 218,594.48 × 90,417.62
  4. Step 4: Simplify right side
    158,390.42x = 19,764,791,081.68
  5. Step 5: Solve for x
    x = 19,764,791,081.68/158,390.42
  6. Step 6: Final answer
    x = 124,785.27

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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.