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Finding the Fourth Proportional to 210,168.24, 290,069.76 and 125,290.76

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Solution

The fourth proportional to 210,168.24, 290,069.76 and 125,290.76 is: 172,923.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,168.24 : 290,069.76 = 125,290.76 : x
  2. Step 2: Convert to fraction form
    210,168.24/290,069.76 = 125,290.76/x
  3. Step 3: Cross multiply
    210,168.24x = 290,069.76 × 125,290.76
  4. Step 4: Simplify right side
    210,168.24x = 36,343,060,683.42
  5. Step 5: Solve for x
    x = 36,343,060,683.42/210,168.24
  6. Step 6: Final answer
    x = 172,923.66

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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.