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Finding the Fourth Proportional to 139,264.31, 192,187.08 and 75,602.11

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Solution

The fourth proportional to 139,264.31, 192,187.08 and 75,602.11 is: 104,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,264.31 : 192,187.08 = 75,602.11 : x
  2. Step 2: Convert to fraction form
    139,264.31/192,187.08 = 75,602.11/x
  3. Step 3: Cross multiply
    139,264.31x = 192,187.08 × 75,602.11
  4. Step 4: Simplify right side
    139,264.31x = 14,529,748,642.62
  5. Step 5: Solve for x
    x = 14,529,748,642.62/139,264.31
  6. Step 6: Final answer
    x = 104,332.18

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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.