Home / 210,521.72-315,782.15-84,191.49

Finding the Fourth Proportional to 210,521.72, 315,782.15 and 84,191.49

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Solution

The fourth proportional to 210,521.72, 315,782.15 and 84,191.49 is: 126,287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,521.72 : 315,782.15 = 84,191.49 : x
  2. Step 2: Convert to fraction form
    210,521.72/315,782.15 = 84,191.49/x
  3. Step 3: Cross multiply
    210,521.72x = 315,782.15 × 84,191.49
  4. Step 4: Simplify right side
    210,521.72x = 26,586,169,302.95
  5. Step 5: Solve for x
    x = 26,586,169,302.95/210,521.72
  6. Step 6: Final answer
    x = 126,287.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.