Home / 147,280.78-203,248.85-83,619.95

Finding the Fourth Proportional to 147,280.78, 203,248.85 and 83,619.95

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Solution

The fourth proportional to 147,280.78, 203,248.85 and 83,619.95 is: 115,396.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,280.78 : 203,248.85 = 83,619.95 : x
  2. Step 2: Convert to fraction form
    147,280.78/203,248.85 = 83,619.95/x
  3. Step 3: Cross multiply
    147,280.78x = 203,248.85 × 83,619.95
  4. Step 4: Simplify right side
    147,280.78x = 16,995,657,240.21
  5. Step 5: Solve for x
    x = 16,995,657,240.21/147,280.78
  6. Step 6: Final answer
    x = 115,396.30

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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.