Home / 130,638.75-195,968.25-40,670.16

Finding the Fourth Proportional to 130,638.75, 195,968.25 and 40,670.16

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Solution

The fourth proportional to 130,638.75, 195,968.25 and 40,670.16 is: 61,008.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,638.75 : 195,968.25 = 40,670.16 : x
  2. Step 2: Convert to fraction form
    130,638.75/195,968.25 = 40,670.16/x
  3. Step 3: Cross multiply
    130,638.75x = 195,968.25 × 40,670.16
  4. Step 4: Simplify right side
    130,638.75x = 7,970,060,082.42
  5. Step 5: Solve for x
    x = 7,970,060,082.42/130,638.75
  6. Step 6: Final answer
    x = 61,008.39

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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.