Home / 153,355.42-211,661.94-89,708.86

Finding the Fourth Proportional to 153,355.42, 211,661.94 and 89,708.86

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Solution

The fourth proportional to 153,355.42, 211,661.94 and 89,708.86 is: 123,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,355.42 : 211,661.94 = 89,708.86 : x
  2. Step 2: Convert to fraction form
    153,355.42/211,661.94 = 89,708.86/x
  3. Step 3: Cross multiply
    153,355.42x = 211,661.94 × 89,708.86
  4. Step 4: Simplify right side
    153,355.42x = 18,987,951,342.79
  5. Step 5: Solve for x
    x = 18,987,951,342.79/153,355.42
  6. Step 6: Final answer
    x = 123,816.63

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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.