Home / 88,128,401.80-132,192,602.70-78,302,648.20

Finding the Fourth Proportional to 88,128,401.80, 132,192,602.70 and 78,302,648.20

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Solution

The fourth proportional to 88,128,401.80, 132,192,602.70 and 78,302,648.20 is: 117,453,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128,401.80 : 132,192,602.70 = 78,302,648.20 : x
  2. Step 2: Convert to fraction form
    88,128,401.80/132,192,602.70 = 78,302,648.20/x
  3. Step 3: Cross multiply
    88,128,401.80x = 132,192,602.70 × 78,302,648.20
  4. Step 4: Simplify right side
    88,128,401.80x = 10,351,030,863,860,470
  5. Step 5: Solve for x
    x = 10,351,030,863,860,470/88,128,401.80
  6. Step 6: Final answer
    x = 117,453,972.30

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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.