Home / 134,967.28-186,277.66-78,411.48

Finding the Fourth Proportional to 134,967.28, 186,277.66 and 78,411.48

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Solution

The fourth proportional to 134,967.28, 186,277.66 and 78,411.48 is: 108,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,967.28 : 186,277.66 = 78,411.48 : x
  2. Step 2: Convert to fraction form
    134,967.28/186,277.66 = 78,411.48/x
  3. Step 3: Cross multiply
    134,967.28x = 186,277.66 × 78,411.48
  4. Step 4: Simplify right side
    134,967.28x = 14,606,307,011.54
  5. Step 5: Solve for x
    x = 14,606,307,011.54/134,967.28
  6. Step 6: Final answer
    x = 108,221.10

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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.