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Finding the Fourth Proportional to 139,134.08, 191,929.02 and 88,053.32

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Solution

The fourth proportional to 139,134.08, 191,929.02 and 88,053.32 is: 121,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,134.08 : 191,929.02 = 88,053.32 : x
  2. Step 2: Convert to fraction form
    139,134.08/191,929.02 = 88,053.32/x
  3. Step 3: Cross multiply
    139,134.08x = 191,929.02 × 88,053.32
  4. Step 4: Simplify right side
    139,134.08x = 16,899,987,415.35
  5. Step 5: Solve for x
    x = 16,899,987,415.35/139,134.08
  6. Step 6: Final answer
    x = 121,465.48

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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.