Home / 165,639,111.89-248,431,717.49-78,200,459.86

Finding the Fourth Proportional to 165,639,111.89, 248,431,717.49 and 78,200,459.86

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Solution

The fourth proportional to 165,639,111.89, 248,431,717.49 and 78,200,459.86 is: 117,287,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,639,111.89 : 248,431,717.49 = 78,200,459.86 : x
  2. Step 2: Convert to fraction form
    165,639,111.89/248,431,717.49 = 78,200,459.86/x
  3. Step 3: Cross multiply
    165,639,111.89x = 248,431,717.49 × 78,200,459.86
  4. Step 4: Simplify right side
    165,639,111.89x = 19,427,474,551,527,604
  5. Step 5: Solve for x
    x = 19,427,474,551,527,604/165,639,111.89
  6. Step 6: Final answer
    x = 117,287,966.17

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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.