Home / 158,811.22-219,076.81-128,630.62

Finding the Fourth Proportional to 158,811.22, 219,076.81 and 128,630.62

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Solution

The fourth proportional to 158,811.22, 219,076.81 and 128,630.62 is: 177,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,811.22 : 219,076.81 = 128,630.62 : x
  2. Step 2: Convert to fraction form
    158,811.22/219,076.81 = 128,630.62/x
  3. Step 3: Cross multiply
    158,811.22x = 219,076.81 × 128,630.62
  4. Step 4: Simplify right side
    158,811.22x = 28,179,985,897.92
  5. Step 5: Solve for x
    x = 28,179,985,897.92/158,811.22
  6. Step 6: Final answer
    x = 177,443.29

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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.