Home / 86,206,871.20-129,310,306.80-70,901,370.40

Finding the Fourth Proportional to 86,206,871.20, 129,310,306.80 and 70,901,370.40

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Solution

The fourth proportional to 86,206,871.20, 129,310,306.80 and 70,901,370.40 is: 106,352,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206,871.20 : 129,310,306.80 = 70,901,370.40 : x
  2. Step 2: Convert to fraction form
    86,206,871.20/129,310,306.80 = 70,901,370.40/x
  3. Step 3: Cross multiply
    86,206,871.20x = 129,310,306.80 × 70,901,370.40
  4. Step 4: Simplify right side
    86,206,871.20x = 9,168,277,958,964,440
  5. Step 5: Solve for x
    x = 9,168,277,958,964,440/86,206,871.20
  6. Step 6: Final answer
    x = 106,352,055.60

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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.