Home / 134,970.28-186,281.80-78,414.48

Finding the Fourth Proportional to 134,970.28, 186,281.80 and 78,414.48

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Solution

The fourth proportional to 134,970.28, 186,281.80 and 78,414.48 is: 108,225.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,970.28 : 186,281.80 = 78,414.48 : x
  2. Step 2: Convert to fraction form
    134,970.28/186,281.80 = 78,414.48/x
  3. Step 3: Cross multiply
    134,970.28x = 186,281.80 × 78,414.48
  4. Step 4: Simplify right side
    134,970.28x = 14,607,190,480.46
  5. Step 5: Solve for x
    x = 14,607,190,480.46/134,970.28
  6. Step 6: Final answer
    x = 108,225.24

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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.