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Finding the Fourth Proportional to 131,656.56, 181,681.56 and 75,086.16

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Solution

The fourth proportional to 131,656.56, 181,681.56 and 75,086.16 is: 103,616.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,656.56 : 181,681.56 = 75,086.16 : x
  2. Step 2: Convert to fraction form
    131,656.56/181,681.56 = 75,086.16/x
  3. Step 3: Cross multiply
    131,656.56x = 181,681.56 × 75,086.16
  4. Step 4: Simplify right side
    131,656.56x = 13,641,770,683.21
  5. Step 5: Solve for x
    x = 13,641,770,683.21/131,656.56
  6. Step 6: Final answer
    x = 103,616.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.