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Finding the Fourth Proportional to 152,131.70, 209,871.90 and 98,434.22

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Solution

The fourth proportional to 152,131.70, 209,871.90 and 98,434.22 is: 135,794.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,131.70 : 209,871.90 = 98,434.22 : x
  2. Step 2: Convert to fraction form
    152,131.70/209,871.90 = 98,434.22/x
  3. Step 3: Cross multiply
    152,131.70x = 209,871.90 × 98,434.22
  4. Step 4: Simplify right side
    152,131.70x = 20,658,576,776.42
  5. Step 5: Solve for x
    x = 20,658,576,776.42/152,131.70
  6. Step 6: Final answer
    x = 135,794.03

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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.