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Finding the Fourth Proportional to 165,603, 228,532.19 and 90,151.50

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Solution

The fourth proportional to 165,603, 228,532.19 and 90,151.50 is: 124,409.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,603 : 228,532.19 = 90,151.50 : x
  2. Step 2: Convert to fraction form
    165,603/228,532.19 = 90,151.50/x
  3. Step 3: Cross multiply
    165,603x = 228,532.19 × 90,151.50
  4. Step 4: Simplify right side
    165,603x = 20,602,519,276.03
  5. Step 5: Solve for x
    x = 20,602,519,276.03/165,603
  6. Step 6: Final answer
    x = 124,409.09

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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.