Home / 140,240.90-193,549.06-78,989.10

Finding the Fourth Proportional to 140,240.90, 193,549.06 and 78,989.10

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Solution

The fourth proportional to 140,240.90, 193,549.06 and 78,989.10 is: 109,014.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,240.90 : 193,549.06 = 78,989.10 : x
  2. Step 2: Convert to fraction form
    140,240.90/193,549.06 = 78,989.10/x
  3. Step 3: Cross multiply
    140,240.90x = 193,549.06 × 78,989.10
  4. Step 4: Simplify right side
    140,240.90x = 15,288,266,516.89
  5. Step 5: Solve for x
    x = 15,288,266,516.89/140,240.90
  6. Step 6: Final answer
    x = 109,014.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.