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Finding the Fourth Proportional to 202,153.40, 302,987.10 and 83,763.80

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Solution

The fourth proportional to 202,153.40, 302,987.10 and 83,763.80 is: 125,545.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,153.40 : 302,987.10 = 83,763.80 : x
  2. Step 2: Convert to fraction form
    202,153.40/302,987.10 = 83,763.80/x
  3. Step 3: Cross multiply
    202,153.40x = 302,987.10 × 83,763.80
  4. Step 4: Simplify right side
    202,153.40x = 25,379,350,846.98
  5. Step 5: Solve for x
    x = 25,379,350,846.98/202,153.40
  6. Step 6: Final answer
    x = 125,545.01

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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.