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Finding the Third Proportional to 109,282,785.50 and 178,430,062.50

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Solution

The third proportional to 109,282,785.50 and 178,430,062.50 is: 291,329,389.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,282,785.50 : 178,430,062.50 = 178,430,062.50 : x
  2. Step 2: Convert to fraction form
    109,282,785.50/178,430,062.50 = 178,430,062.50/x
  3. Step 3: Cross multiply
    109,282,785.50x = 178,430,062.50 × 178,430,062.50
  4. Step 4: Simplify right side
    109,282,785.50x = 31,837,287,203,753,908
  5. Step 5: Solve for x
    x = 31,837,287,203,753,908/109,282,785.50
  6. Step 6: Final answer
    x = 291,329,389.69

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.