Home / 165,623.36-228,561.12-90,172.40

Finding the Fourth Proportional to 165,623.36, 228,561.12 and 90,172.40

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Solution

The fourth proportional to 165,623.36, 228,561.12 and 90,172.40 is: 124,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,623.36 : 228,561.12 = 90,172.40 : x
  2. Step 2: Convert to fraction form
    165,623.36/228,561.12 = 90,172.40/x
  3. Step 3: Cross multiply
    165,623.36x = 228,561.12 × 90,172.40
  4. Step 4: Simplify right side
    165,623.36x = 20,609,904,737.09
  5. Step 5: Solve for x
    x = 20,609,904,737.09/165,623.36
  6. Step 6: Final answer
    x = 124,438.39

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1.5x scale

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.