Home / 78,148.30-117,220.82-18,984.28

Finding the Fourth Proportional to 78,148.30, 117,220.82 and 18,984.28

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Solution

The fourth proportional to 78,148.30, 117,220.82 and 18,984.28 is: 28,476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,148.30 : 117,220.82 = 18,984.28 : x
  2. Step 2: Convert to fraction form
    78,148.30/117,220.82 = 18,984.28/x
  3. Step 3: Cross multiply
    78,148.30x = 117,220.82 × 18,984.28
  4. Step 4: Simplify right side
    78,148.30x = 2,225,352,868.71
  5. Step 5: Solve for x
    x = 2,225,352,868.71/78,148.30
  6. Step 6: Final answer
    x = 28,476.02

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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.