Home / 78,130.12-117,168.30-25,526.56

Finding the Fourth Proportional to 78,130.12, 117,168.30 and 25,526.56

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Solution

The fourth proportional to 78,130.12, 117,168.30 and 25,526.56 is: 38,281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,130.12 : 117,168.30 = 25,526.56 : x
  2. Step 2: Convert to fraction form
    78,130.12/117,168.30 = 25,526.56/x
  3. Step 3: Cross multiply
    78,130.12x = 117,168.30 × 25,526.56
  4. Step 4: Simplify right side
    78,130.12x = 2,990,903,640.05
  5. Step 5: Solve for x
    x = 2,990,903,640.05/78,130.12
  6. Step 6: Final answer
    x = 38,281.06

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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.