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Finding the Fourth Proportional to 97,803.40, 146,705.10 and 66,699.40

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Solution

The fourth proportional to 97,803.40, 146,705.10 and 66,699.40 is: 100,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,803.40 : 146,705.10 = 66,699.40 : x
  2. Step 2: Convert to fraction form
    97,803.40/146,705.10 = 66,699.40/x
  3. Step 3: Cross multiply
    97,803.40x = 146,705.10 × 66,699.40
  4. Step 4: Simplify right side
    97,803.40x = 9,785,142,146.94
  5. Step 5: Solve for x
    x = 9,785,142,146.94/97,803.40
  6. Step 6: Final answer
    x = 100,049.10

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1.5x scale

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.