Home / 78,152.04-117,226.44-18,988.02

Finding the Fourth Proportional to 78,152.04, 117,226.44 and 18,988.02

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Solution

The fourth proportional to 78,152.04, 117,226.44 and 18,988.02 is: 28,481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,152.04 : 117,226.44 = 18,988.02 : x
  2. Step 2: Convert to fraction form
    78,152.04/117,226.44 = 18,988.02/x
  3. Step 3: Cross multiply
    78,152.04x = 117,226.44 × 18,988.02
  4. Step 4: Simplify right side
    78,152.04x = 2,225,897,987.25
  5. Step 5: Solve for x
    x = 2,225,897,987.25/78,152.04
  6. Step 6: Final answer
    x = 28,481.64

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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.