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Finding the Fourth Proportional to 139,001.22, 191,822.01 and 75,339

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Solution

The fourth proportional to 139,001.22, 191,822.01 and 75,339 is: 103,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,001.22 : 191,822.01 = 75,339 : x
  2. Step 2: Convert to fraction form
    139,001.22/191,822.01 = 75,339/x
  3. Step 3: Cross multiply
    139,001.22x = 191,822.01 × 75,339
  4. Step 4: Simplify right side
    139,001.22x = 14,451,678,411.39
  5. Step 5: Solve for x
    x = 14,451,678,411.39/139,001.22
  6. Step 6: Final answer
    x = 103,968.00

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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.