Home / 78,760,901.80-118,141,352.70-68,144,069.80

Finding the Fourth Proportional to 78,760,901.80, 118,141,352.70 and 68,144,069.80

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Solution

The fourth proportional to 78,760,901.80, 118,141,352.70 and 68,144,069.80 is: 102,216,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760,901.80 : 118,141,352.70 = 68,144,069.80 : x
  2. Step 2: Convert to fraction form
    78,760,901.80/118,141,352.70 = 68,144,069.80/x
  3. Step 3: Cross multiply
    78,760,901.80x = 118,141,352.70 × 68,144,069.80
  4. Step 4: Simplify right side
    78,760,901.80x = 8,050,632,584,655,218
  5. Step 5: Solve for x
    x = 8,050,632,584,655,218/78,760,901.80
  6. Step 6: Final answer
    x = 102,216,104.70

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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.