Home / 138,675,309.60-208,012,964.40-67,011,693.60

Finding the Fourth Proportional to 138,675,309.60, 208,012,964.40 and 67,011,693.60

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Solution

The fourth proportional to 138,675,309.60, 208,012,964.40 and 67,011,693.60 is: 100,517,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,675,309.60 : 208,012,964.40 = 67,011,693.60 : x
  2. Step 2: Convert to fraction form
    138,675,309.60/208,012,964.40 = 67,011,693.60/x
  3. Step 3: Cross multiply
    138,675,309.60x = 208,012,964.40 × 67,011,693.60
  4. Step 4: Simplify right side
    138,675,309.60x = 13,939,301,035,200,508
  5. Step 5: Solve for x
    x = 13,939,301,035,200,508/138,675,309.60
  6. Step 6: Final answer
    x = 100,517,540.40

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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.