Home / 140,009.74-193,206.43-79,572.40

Finding the Fourth Proportional to 140,009.74, 193,206.43 and 79,572.40

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Solution

The fourth proportional to 140,009.74, 193,206.43 and 79,572.40 is: 109,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,009.74 : 193,206.43 = 79,572.40 : x
  2. Step 2: Convert to fraction form
    140,009.74/193,206.43 = 79,572.40/x
  3. Step 3: Cross multiply
    140,009.74x = 193,206.43 × 79,572.40
  4. Step 4: Simplify right side
    140,009.74x = 15,373,899,330.53
  5. Step 5: Solve for x
    x = 15,373,899,330.53/140,009.74
  6. Step 6: Final answer
    x = 109,805.93

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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.