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Finding the Fourth Proportional to 118,867.20, 178,300.80 and 39,973.20

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Solution

The fourth proportional to 118,867.20, 178,300.80 and 39,973.20 is: 59,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,867.20 : 178,300.80 = 39,973.20 : x
  2. Step 2: Convert to fraction form
    118,867.20/178,300.80 = 39,973.20/x
  3. Step 3: Cross multiply
    118,867.20x = 178,300.80 × 39,973.20
  4. Step 4: Simplify right side
    118,867.20x = 7,127,253,538.56
  5. Step 5: Solve for x
    x = 7,127,253,538.56/118,867.20
  6. Step 6: Final answer
    x = 59,959.80

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1.5x scale

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.