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Finding the Fourth Proportional to 131,473.80, 197,210.70 and 64,945.80

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Solution

The fourth proportional to 131,473.80, 197,210.70 and 64,945.80 is: 97,418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,473.80 : 197,210.70 = 64,945.80 : x
  2. Step 2: Convert to fraction form
    131,473.80/197,210.70 = 64,945.80/x
  3. Step 3: Cross multiply
    131,473.80x = 197,210.70 × 64,945.80
  4. Step 4: Simplify right side
    131,473.80x = 12,808,006,680.06
  5. Step 5: Solve for x
    x = 12,808,006,680.06/131,473.80
  6. Step 6: Final answer
    x = 97,418.70

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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.