Home / 153,049.43-210,725.80-138,861.65

Finding the Fourth Proportional to 153,049.43, 210,725.80 and 138,861.65

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Solution

The fourth proportional to 153,049.43, 210,725.80 and 138,861.65 is: 191,191.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,049.43 : 210,725.80 = 138,861.65 : x
  2. Step 2: Convert to fraction form
    153,049.43/210,725.80 = 138,861.65/x
  3. Step 3: Cross multiply
    153,049.43x = 210,725.80 × 138,861.65
  4. Step 4: Simplify right side
    153,049.43x = 29,261,732,465.23
  5. Step 5: Solve for x
    x = 29,261,732,465.23/153,049.43
  6. Step 6: Final answer
    x = 191,191.38

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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.