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Finding the Fourth Proportional to 131,507.20, 197,131.20 and 64,957.60

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Solution

The fourth proportional to 131,507.20, 197,131.20 and 64,957.60 is: 97,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,507.20 : 197,131.20 = 64,957.60 : x
  2. Step 2: Convert to fraction form
    131,507.20/197,131.20 = 64,957.60/x
  3. Step 3: Cross multiply
    131,507.20x = 197,131.20 × 64,957.60
  4. Step 4: Simplify right side
    131,507.20x = 12,805,169,637.12
  5. Step 5: Solve for x
    x = 12,805,169,637.12/131,507.20
  6. Step 6: Final answer
    x = 97,372.38

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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.