Home / 78,867.30-118,300.95-74,979.30

Finding the Fourth Proportional to 78,867.30, 118,300.95 and 74,979.30

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Solution

The fourth proportional to 78,867.30, 118,300.95 and 74,979.30 is: 112,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,867.30 : 118,300.95 = 74,979.30 : x
  2. Step 2: Convert to fraction form
    78,867.30/118,300.95 = 74,979.30/x
  3. Step 3: Cross multiply
    78,867.30x = 118,300.95 × 74,979.30
  4. Step 4: Simplify right side
    78,867.30x = 8,870,122,420.34
  5. Step 5: Solve for x
    x = 8,870,122,420.34/78,867.30
  6. Step 6: Final answer
    x = 112,468.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.