Home / 138,065,598.25-190,534,549.30-75,345,736.10

Finding the Fourth Proportional to 138,065,598.25, 190,534,549.30 and 75,345,736.10

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Solution

The fourth proportional to 138,065,598.25, 190,534,549.30 and 75,345,736.10 is: 103,979,311.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,065,598.25 : 190,534,549.30 = 75,345,736.10 : x
  2. Step 2: Convert to fraction form
    138,065,598.25/190,534,549.30 = 75,345,736.10/x
  3. Step 3: Cross multiply
    138,065,598.25x = 190,534,549.30 × 75,345,736.10
  4. Step 4: Simplify right side
    138,065,598.25x = 14,355,965,868,349,204
  5. Step 5: Solve for x
    x = 14,355,965,868,349,204/138,065,598.25
  6. Step 6: Final answer
    x = 103,979,311.65

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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.