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Finding the Fourth Proportional to 126,114,460, 189,171,690 and 30,376,348

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Solution

The fourth proportional to 126,114,460, 189,171,690 and 30,376,348 is: 45,564,522

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,114,460 : 189,171,690 = 30,376,348 : x
  2. Step 2: Convert to fraction form
    126,114,460/189,171,690 = 30,376,348/x
  3. Step 3: Cross multiply
    126,114,460x = 189,171,690 × 30,376,348
  4. Step 4: Simplify right side
    126,114,460x = 5,746,345,087,188,120
  5. Step 5: Solve for x
    x = 5,746,345,087,188,120/126,114,460
  6. Step 6: Final answer
    x = 45,564,522

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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.