Home / 103,680,689.80-155,521,034.70-76,806,833.80

Finding the Fourth Proportional to 103,680,689.80, 155,521,034.70 and 76,806,833.80

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Solution

The fourth proportional to 103,680,689.80, 155,521,034.70 and 76,806,833.80 is: 115,210,250.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,689.80 : 155,521,034.70 = 76,806,833.80 : x
  2. Step 2: Convert to fraction form
    103,680,689.80/155,521,034.70 = 76,806,833.80/x
  3. Step 3: Cross multiply
    103,680,689.80x = 155,521,034.70 × 76,806,833.80
  4. Step 4: Simplify right side
    103,680,689.80x = 11,945,078,264,606,932
  5. Step 5: Solve for x
    x = 11,945,078,264,606,932/103,680,689.80
  6. Step 6: Final answer
    x = 115,210,250.70

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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.