Home / 130,544.64-179,932.32-99,907.20

Finding the Fourth Proportional to 130,544.64, 179,932.32 and 99,907.20

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Solution

The fourth proportional to 130,544.64, 179,932.32 and 99,907.20 is: 137,704.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,544.64 : 179,932.32 = 99,907.20 : x
  2. Step 2: Convert to fraction form
    130,544.64/179,932.32 = 99,907.20/x
  3. Step 3: Cross multiply
    130,544.64x = 179,932.32 × 99,907.20
  4. Step 4: Simplify right side
    130,544.64x = 17,976,534,280.70
  5. Step 5: Solve for x
    x = 17,976,534,280.70/130,544.64
  6. Step 6: Final answer
    x = 137,704.12

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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.