Home / 134,828.40-186,100.20-78,258

Finding the Fourth Proportional to 134,828.40, 186,100.20 and 78,258

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Solution

The fourth proportional to 134,828.40, 186,100.20 and 78,258 is: 108,017.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,828.40 : 186,100.20 = 78,258 : x
  2. Step 2: Convert to fraction form
    134,828.40/186,100.20 = 78,258/x
  3. Step 3: Cross multiply
    134,828.40x = 186,100.20 × 78,258
  4. Step 4: Simplify right side
    134,828.40x = 14,563,829,451.60
  5. Step 5: Solve for x
    x = 14,563,829,451.60/134,828.40
  6. Step 6: Final answer
    x = 108,017.52

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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.