Home / 86,246,669.20-129,370,003.80-85,112,928.40

Finding the Fourth Proportional to 86,246,669.20, 129,370,003.80 and 85,112,928.40

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Solution

The fourth proportional to 86,246,669.20, 129,370,003.80 and 85,112,928.40 is: 127,669,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,246,669.20 : 129,370,003.80 = 85,112,928.40 : x
  2. Step 2: Convert to fraction form
    86,246,669.20/129,370,003.80 = 85,112,928.40/x
  3. Step 3: Cross multiply
    86,246,669.20x = 129,370,003.80 × 85,112,928.40
  4. Step 4: Simplify right side
    86,246,669.20x = 11,011,059,870,537,128
  5. Step 5: Solve for x
    x = 11,011,059,870,537,128/86,246,669.20
  6. Step 6: Final answer
    x = 127,669,392.60

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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.