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Finding the Fourth Proportional to 98,259.60, 147,388.80 and 28,139.04

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Solution

The fourth proportional to 98,259.60, 147,388.80 and 28,139.04 is: 42,208.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,259.60 : 147,388.80 = 28,139.04 : x
  2. Step 2: Convert to fraction form
    98,259.60/147,388.80 = 28,139.04/x
  3. Step 3: Cross multiply
    98,259.60x = 147,388.80 × 28,139.04
  4. Step 4: Simplify right side
    98,259.60x = 4,147,379,338.75
  5. Step 5: Solve for x
    x = 4,147,379,338.75/98,259.60
  6. Step 6: Final answer
    x = 42,208.39

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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.