Home / 118,390.20-177,585.30-74,153.40

Finding the Fourth Proportional to 118,390.20, 177,585.30 and 74,153.40

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Solution

The fourth proportional to 118,390.20, 177,585.30 and 74,153.40 is: 111,230.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,390.20 : 177,585.30 = 74,153.40 : x
  2. Step 2: Convert to fraction form
    118,390.20/177,585.30 = 74,153.40/x
  3. Step 3: Cross multiply
    118,390.20x = 177,585.30 × 74,153.40
  4. Step 4: Simplify right side
    118,390.20x = 13,168,553,785.02
  5. Step 5: Solve for x
    x = 13,168,553,785.02/118,390.20
  6. Step 6: Final answer
    x = 111,230.10

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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.