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Finding the Fourth Proportional to 79,240,123.80, 118,860,185.70 and 79,240,123.80

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Solution

The fourth proportional to 79,240,123.80, 118,860,185.70 and 79,240,123.80 is: 118,860,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,240,123.80 : 118,860,185.70 = 79,240,123.80 : x
  2. Step 2: Convert to fraction form
    79,240,123.80/118,860,185.70 = 79,240,123.80/x
  3. Step 3: Cross multiply
    79,240,123.80x = 118,860,185.70 × 79,240,123.80
  4. Step 4: Simplify right side
    79,240,123.80x = 9,418,495,829,758,990
  5. Step 5: Solve for x
    x = 9,418,495,829,758,990/79,240,123.80
  6. Step 6: Final answer
    x = 118,860,185.70

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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.