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Finding the Fourth Proportional to 139,009.48, 191,833.27 and 75,347.26

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Solution

The fourth proportional to 139,009.48, 191,833.27 and 75,347.26 is: 103,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,009.48 : 191,833.27 = 75,347.26 : x
  2. Step 2: Convert to fraction form
    139,009.48/191,833.27 = 75,347.26/x
  3. Step 3: Cross multiply
    139,009.48x = 191,833.27 × 75,347.26
  4. Step 4: Simplify right side
    139,009.48x = 14,454,110,312.17
  5. Step 5: Solve for x
    x = 14,454,110,312.17/139,009.48
  6. Step 6: Final answer
    x = 103,979.32

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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.