Home / 78,117.04-117,181.64-25,531.84

Finding the Fourth Proportional to 78,117.04, 117,181.64 and 25,531.84

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Solution

The fourth proportional to 78,117.04, 117,181.64 and 25,531.84 is: 38,299.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,117.04 : 117,181.64 = 25,531.84 : x
  2. Step 2: Convert to fraction form
    78,117.04/117,181.64 = 25,531.84/x
  3. Step 3: Cross multiply
    78,117.04x = 117,181.64 × 25,531.84
  4. Step 4: Simplify right side
    78,117.04x = 2,991,862,902.24
  5. Step 5: Solve for x
    x = 2,991,862,902.24/78,117.04
  6. Step 6: Final answer
    x = 38,299.75

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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.