Home / 114,731.20-172,096.80-86,737.60

Finding the Fourth Proportional to 114,731.20, 172,096.80 and 86,737.60

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Solution

The fourth proportional to 114,731.20, 172,096.80 and 86,737.60 is: 130,106.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,731.20 : 172,096.80 = 86,737.60 : x
  2. Step 2: Convert to fraction form
    114,731.20/172,096.80 = 86,737.60/x
  3. Step 3: Cross multiply
    114,731.20x = 172,096.80 × 86,737.60
  4. Step 4: Simplify right side
    114,731.20x = 14,927,263,399.68
  5. Step 5: Solve for x
    x = 14,927,263,399.68/114,731.20
  6. Step 6: Final answer
    x = 130,106.40

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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.