Home / 209,052.02-288,611.46-137,639.63

Finding the Fourth Proportional to 209,052.02, 288,611.46 and 137,639.63

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Solution

The fourth proportional to 209,052.02, 288,611.46 and 137,639.63 is: 190,021.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,052.02 : 288,611.46 = 137,639.63 : x
  2. Step 2: Convert to fraction form
    209,052.02/288,611.46 = 137,639.63/x
  3. Step 3: Cross multiply
    209,052.02x = 288,611.46 × 137,639.63
  4. Step 4: Simplify right side
    209,052.02x = 39,724,373,125.10
  5. Step 5: Solve for x
    x = 39,724,373,125.10/209,052.02
  6. Step 6: Final answer
    x = 190,021.48

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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.