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Finding the Fourth Proportional to 123,812,187.20, 185,718,280.80 and 123,812,187.20

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Solution

The fourth proportional to 123,812,187.20, 185,718,280.80 and 123,812,187.20 is: 185,718,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,812,187.20 : 185,718,280.80 = 123,812,187.20 : x
  2. Step 2: Convert to fraction form
    123,812,187.20/185,718,280.80 = 123,812,187.20/x
  3. Step 3: Cross multiply
    123,812,187.20x = 185,718,280.80 × 123,812,187.20
  4. Step 4: Simplify right side
    123,812,187.20x = 22,994,186,548,871,768
  5. Step 5: Solve for x
    x = 22,994,186,548,871,768/123,812,187.20
  6. Step 6: Final answer
    x = 185,718,280.80

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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.