Home / 86,206,820.20-129,310,230.30-70,901,319.40

Finding the Fourth Proportional to 86,206,820.20, 129,310,230.30 and 70,901,319.40

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Solution

The fourth proportional to 86,206,820.20, 129,310,230.30 and 70,901,319.40 is: 106,351,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206,820.20 : 129,310,230.30 = 70,901,319.40 : x
  2. Step 2: Convert to fraction form
    86,206,820.20/129,310,230.30 = 70,901,319.40/x
  3. Step 3: Cross multiply
    86,206,820.20x = 129,310,230.30 × 70,901,319.40
  4. Step 4: Simplify right side
    86,206,820.20x = 9,168,265,940,187,858
  5. Step 5: Solve for x
    x = 9,168,265,940,187,858/86,206,820.20
  6. Step 6: Final answer
    x = 106,351,979.10

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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.