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Finding the Fourth Proportional to 68,117.50, 102,816.05 and 68,117.50

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Solution

The fourth proportional to 68,117.50, 102,816.05 and 68,117.50 is: 102,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,117.50 : 102,816.05 = 68,117.50 : x
  2. Step 2: Convert to fraction form
    68,117.50/102,816.05 = 68,117.50/x
  3. Step 3: Cross multiply
    68,117.50x = 102,816.05 × 68,117.50
  4. Step 4: Simplify right side
    68,117.50x = 7,003,572,285.88
  5. Step 5: Solve for x
    x = 7,003,572,285.88/68,117.50
  6. Step 6: Final answer
    x = 102,816.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.