Home / 78,806,673.30-118,210,009.95-68,036,135.70

Finding the Fourth Proportional to 78,806,673.30, 118,210,009.95 and 68,036,135.70

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Solution

The fourth proportional to 78,806,673.30, 118,210,009.95 and 68,036,135.70 is: 102,054,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,806,673.30 : 118,210,009.95 = 68,036,135.70 : x
  2. Step 2: Convert to fraction form
    78,806,673.30/118,210,009.95 = 68,036,135.70/x
  3. Step 3: Cross multiply
    78,806,673.30x = 118,210,009.95 × 68,036,135.70
  4. Step 4: Simplify right side
    78,806,673.30x = 8,042,552,278,056,551
  5. Step 5: Solve for x
    x = 8,042,552,278,056,551/78,806,673.30
  6. Step 6: Final answer
    x = 102,054,203.55

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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.