Home / 78,152.43-117,226.98-18,988.41

Finding the Fourth Proportional to 78,152.43, 117,226.98 and 18,988.41

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Solution

The fourth proportional to 78,152.43, 117,226.98 and 18,988.41 is: 28,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,152.43 : 117,226.98 = 18,988.41 : x
  2. Step 2: Convert to fraction form
    78,152.43/117,226.98 = 18,988.41/x
  3. Step 3: Cross multiply
    78,152.43x = 117,226.98 × 18,988.41
  4. Step 4: Simplify right side
    78,152.43x = 2,225,953,959.30
  5. Step 5: Solve for x
    x = 2,225,953,959.30/78,152.43
  6. Step 6: Final answer
    x = 28,482.21

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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.