Home / 86,206,861.20-129,310,291.80-70,901,360.40

Finding the Fourth Proportional to 86,206,861.20, 129,310,291.80 and 70,901,360.40

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Solution

The fourth proportional to 86,206,861.20, 129,310,291.80 and 70,901,360.40 is: 106,352,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206,861.20 : 129,310,291.80 = 70,901,360.40 : x
  2. Step 2: Convert to fraction form
    86,206,861.20/129,310,291.80 = 70,901,360.40/x
  3. Step 3: Cross multiply
    86,206,861.20x = 129,310,291.80 × 70,901,360.40
  4. Step 4: Simplify right side
    86,206,861.20x = 9,168,275,602,340,966
  5. Step 5: Solve for x
    x = 9,168,275,602,340,966/86,206,861.20
  6. Step 6: Final answer
    x = 106,352,040.60

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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.