Home / 79,139.16-118,624.50-54,172.26

Finding the Fourth Proportional to 79,139.16, 118,624.50 and 54,172.26

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Solution

The fourth proportional to 79,139.16, 118,624.50 and 54,172.26 is: 81,200.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.16 : 118,624.50 = 54,172.26 : x
  2. Step 2: Convert to fraction form
    79,139.16/118,624.50 = 54,172.26/x
  3. Step 3: Cross multiply
    79,139.16x = 118,624.50 × 54,172.26
  4. Step 4: Simplify right side
    79,139.16x = 6,426,157,256.37
  5. Step 5: Solve for x
    x = 6,426,157,256.37/79,139.16
  6. Step 6: Final answer
    x = 81,200.73

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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.