Home / 134,966.28-186,276.28-78,410.48

Finding the Fourth Proportional to 134,966.28, 186,276.28 and 78,410.48

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Solution

The fourth proportional to 134,966.28, 186,276.28 and 78,410.48 is: 108,219.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,966.28 : 186,276.28 = 78,410.48 : x
  2. Step 2: Convert to fraction form
    134,966.28/186,276.28 = 78,410.48/x
  3. Step 3: Cross multiply
    134,966.28x = 186,276.28 × 78,410.48
  4. Step 4: Simplify right side
    134,966.28x = 14,606,012,527.41
  5. Step 5: Solve for x
    x = 14,606,012,527.41/134,966.28
  6. Step 6: Final answer
    x = 108,219.72

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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.