Home / 107,979.17-148,809.47-77,711.94

Finding the Fourth Proportional to 107,979.17, 148,809.47 and 77,711.94

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Solution

The fourth proportional to 107,979.17, 148,809.47 and 77,711.94 is: 107,097.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,979.17 : 148,809.47 = 77,711.94 : x
  2. Step 2: Convert to fraction form
    107,979.17/148,809.47 = 77,711.94/x
  3. Step 3: Cross multiply
    107,979.17x = 148,809.47 × 77,711.94
  4. Step 4: Simplify right side
    107,979.17x = 11,564,272,604.07
  5. Step 5: Solve for x
    x = 11,564,272,604.07/107,979.17
  6. Step 6: Final answer
    x = 107,097.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.