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Finding the Fourth Proportional to 202,102.40, 303,153.60 and 139,116.80

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Solution

The fourth proportional to 202,102.40, 303,153.60 and 139,116.80 is: 208,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,102.40 : 303,153.60 = 139,116.80 : x
  2. Step 2: Convert to fraction form
    202,102.40/303,153.60 = 139,116.80/x
  3. Step 3: Cross multiply
    202,102.40x = 303,153.60 × 139,116.80
  4. Step 4: Simplify right side
    202,102.40x = 42,173,758,740.48
  5. Step 5: Solve for x
    x = 42,173,758,740.48/202,102.40
  6. Step 6: Final answer
    x = 208,675.20

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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.