Home / 134,569.78-185,705.41-74,139.04

Finding the Fourth Proportional to 134,569.78, 185,705.41 and 74,139.04

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Solution

The fourth proportional to 134,569.78, 185,705.41 and 74,139.04 is: 102,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,569.78 : 185,705.41 = 74,139.04 : x
  2. Step 2: Convert to fraction form
    134,569.78/185,705.41 = 74,139.04/x
  3. Step 3: Cross multiply
    134,569.78x = 185,705.41 × 74,139.04
  4. Step 4: Simplify right side
    134,569.78x = 13,768,020,820.21
  5. Step 5: Solve for x
    x = 13,768,020,820.21/134,569.78
  6. Step 6: Final answer
    x = 102,311.39

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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.