Home / 140,020.84-193,231.74-78,765.40

Finding the Fourth Proportional to 140,020.84, 193,231.74 and 78,765.40

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Solution

The fourth proportional to 140,020.84, 193,231.74 and 78,765.40 is: 108,697.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,020.84 : 193,231.74 = 78,765.40 : x
  2. Step 2: Convert to fraction form
    140,020.84/193,231.74 = 78,765.40/x
  3. Step 3: Cross multiply
    140,020.84x = 193,231.74 × 78,765.40
  4. Step 4: Simplify right side
    140,020.84x = 15,219,975,293.80
  5. Step 5: Solve for x
    x = 15,219,975,293.80/140,020.84
  6. Step 6: Final answer
    x = 108,697.93

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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.