Home / 117,936,013.20-176,904,019.80-77,121,344.40

Finding the Fourth Proportional to 117,936,013.20, 176,904,019.80 and 77,121,344.40

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Solution

The fourth proportional to 117,936,013.20, 176,904,019.80 and 77,121,344.40 is: 115,682,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,936,013.20 : 176,904,019.80 = 77,121,344.40 : x
  2. Step 2: Convert to fraction form
    117,936,013.20/176,904,019.80 = 77,121,344.40/x
  3. Step 3: Cross multiply
    117,936,013.20x = 176,904,019.80 × 77,121,344.40
  4. Step 4: Simplify right side
    117,936,013.20x = 13,643,075,836,740,222
  5. Step 5: Solve for x
    x = 13,643,075,836,740,222/117,936,013.20
  6. Step 6: Final answer
    x = 115,682,016.60

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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.