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Finding the Fourth Proportional to 160,009.20, 220,811.40 and 88,393.86

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Solution

The fourth proportional to 160,009.20, 220,811.40 and 88,393.86 is: 121,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,009.20 : 220,811.40 = 88,393.86 : x
  2. Step 2: Convert to fraction form
    160,009.20/220,811.40 = 88,393.86/x
  3. Step 3: Cross multiply
    160,009.20x = 220,811.40 × 88,393.86
  4. Step 4: Simplify right side
    160,009.20x = 19,518,371,978.00
  5. Step 5: Solve for x
    x = 19,518,371,978.00/160,009.20
  6. Step 6: Final answer
    x = 121,982.81

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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.