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Finding the Fourth Proportional to 98,901.60, 148,352.40 and 28,783.20

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Solution

The fourth proportional to 98,901.60, 148,352.40 and 28,783.20 is: 43,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,901.60 : 148,352.40 = 28,783.20 : x
  2. Step 2: Convert to fraction form
    98,901.60/148,352.40 = 28,783.20/x
  3. Step 3: Cross multiply
    98,901.60x = 148,352.40 × 28,783.20
  4. Step 4: Simplify right side
    98,901.60x = 4,270,056,799.68
  5. Step 5: Solve for x
    x = 4,270,056,799.68/98,901.60
  6. Step 6: Final answer
    x = 43,174.80

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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.