Home / 113,319,937.20-169,979,905.80-72,505,268.40

Finding the Fourth Proportional to 113,319,937.20, 169,979,905.80 and 72,505,268.40

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Solution

The fourth proportional to 113,319,937.20, 169,979,905.80 and 72,505,268.40 is: 108,757,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,319,937.20 : 169,979,905.80 = 72,505,268.40 : x
  2. Step 2: Convert to fraction form
    113,319,937.20/169,979,905.80 = 72,505,268.40/x
  3. Step 3: Cross multiply
    113,319,937.20x = 169,979,905.80 × 72,505,268.40
  4. Step 4: Simplify right side
    113,319,937.20x = 12,324,438,692,635,718
  5. Step 5: Solve for x
    x = 12,324,438,692,635,718/113,319,937.20
  6. Step 6: Final answer
    x = 108,757,902.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.