Home / 187,715.68-258,982.72-142,346.40

Finding the Fourth Proportional to 187,715.68, 258,982.72 and 142,346.40

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Solution

The fourth proportional to 187,715.68, 258,982.72 and 142,346.40 is: 196,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,715.68 : 258,982.72 = 142,346.40 : x
  2. Step 2: Convert to fraction form
    187,715.68/258,982.72 = 142,346.40/x
  3. Step 3: Cross multiply
    187,715.68x = 258,982.72 × 142,346.40
  4. Step 4: Simplify right side
    187,715.68x = 36,865,257,854.21
  5. Step 5: Solve for x
    x = 36,865,257,854.21/187,715.68
  6. Step 6: Final answer
    x = 196,388.80

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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.