Home / 103,703,748.40-155,456,089.80-80,661,905.20

Finding the Fourth Proportional to 103,703,748.40, 155,456,089.80 and 80,661,905.20

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Solution

The fourth proportional to 103,703,748.40, 155,456,089.80 and 80,661,905.20 is: 120,915,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703,748.40 : 155,456,089.80 = 80,661,905.20 : x
  2. Step 2: Convert to fraction form
    103,703,748.40/155,456,089.80 = 80,661,905.20/x
  3. Step 3: Cross multiply
    103,703,748.40x = 155,456,089.80 × 80,661,905.20
  4. Step 4: Simplify right side
    103,703,748.40x = 12,539,384,378,210,288
  5. Step 5: Solve for x
    x = 12,539,384,378,210,288/103,703,748.40
  6. Step 6: Final answer
    x = 120,915,440.10

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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.