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Finding the Fourth Proportional to 139,264.79, 192,165.14 and 79,637.27

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Solution

The fourth proportional to 139,264.79, 192,165.14 and 79,637.27 is: 109,887.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,264.79 : 192,165.14 = 79,637.27 : x
  2. Step 2: Convert to fraction form
    139,264.79/192,165.14 = 79,637.27/x
  3. Step 3: Cross multiply
    139,264.79x = 192,165.14 × 79,637.27
  4. Step 4: Simplify right side
    139,264.79x = 15,303,506,740.58
  5. Step 5: Solve for x
    x = 15,303,506,740.58/139,264.79
  6. Step 6: Final answer
    x = 109,887.84

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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.