Home / 158,445.36-218,660.61-90,473.40

Finding the Fourth Proportional to 158,445.36, 218,660.61 and 90,473.40

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Solution

The fourth proportional to 158,445.36, 218,660.61 and 90,473.40 is: 124,856.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,445.36 : 218,660.61 = 90,473.40 : x
  2. Step 2: Convert to fraction form
    158,445.36/218,660.61 = 90,473.40/x
  3. Step 3: Cross multiply
    158,445.36x = 218,660.61 × 90,473.40
  4. Step 4: Simplify right side
    158,445.36x = 19,782,968,832.77
  5. Step 5: Solve for x
    x = 19,782,968,832.77/158,445.36
  6. Step 6: Final answer
    x = 124,856.73

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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.