Home / 117,936,009.20-176,904,013.80-77,121,340.40

Finding the Fourth Proportional to 117,936,009.20, 176,904,013.80 and 77,121,340.40

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Solution

The fourth proportional to 117,936,009.20, 176,904,013.80 and 77,121,340.40 is: 115,682,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,936,009.20 : 176,904,013.80 = 77,121,340.40 : x
  2. Step 2: Convert to fraction form
    117,936,009.20/176,904,013.80 = 77,121,340.40/x
  3. Step 3: Cross multiply
    117,936,009.20x = 176,904,013.80 × 77,121,340.40
  4. Step 4: Simplify right side
    117,936,009.20x = 13,643,074,666,396,100
  5. Step 5: Solve for x
    x = 13,643,074,666,396,100/117,936,009.20
  6. Step 6: Final answer
    x = 115,682,010.60

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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.