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Finding the Fourth Proportional to 138,962, 191,925.96 and 94,172.24

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Solution

The fourth proportional to 138,962, 191,925.96 and 94,172.24 is: 130,065.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,962 : 191,925.96 = 94,172.24 : x
  2. Step 2: Convert to fraction form
    138,962/191,925.96 = 94,172.24/x
  3. Step 3: Cross multiply
    138,962x = 191,925.96 × 94,172.24
  4. Step 4: Simplify right side
    138,962x = 18,074,097,567.35
  5. Step 5: Solve for x
    x = 18,074,097,567.35/138,962
  6. Step 6: Final answer
    x = 130,065.04

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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.