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Finding the Fourth Proportional to 114,942, 172,246.08 and 81,728.76

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Solution

The fourth proportional to 114,942, 172,246.08 and 81,728.76 is: 122,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,942 : 172,246.08 = 81,728.76 : x
  2. Step 2: Convert to fraction form
    114,942/172,246.08 = 81,728.76/x
  3. Step 3: Cross multiply
    114,942x = 172,246.08 × 81,728.76
  4. Step 4: Simplify right side
    114,942x = 14,077,458,533.26
  5. Step 5: Solve for x
    x = 14,077,458,533.26/114,942
  6. Step 6: Final answer
    x = 122,474.45

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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.