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Finding the Fourth Proportional to 165,603.90, 228,531.99 and 90,152.22

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Solution

The fourth proportional to 165,603.90, 228,531.99 and 90,152.22 is: 124,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,603.90 : 228,531.99 = 90,152.22 : x
  2. Step 2: Convert to fraction form
    165,603.90/228,531.99 = 90,152.22/x
  3. Step 3: Cross multiply
    165,603.90x = 228,531.99 × 90,152.22
  4. Step 4: Simplify right side
    165,603.90x = 20,602,666,239.52
  5. Step 5: Solve for x
    x = 20,602,666,239.52/165,603.90
  6. Step 6: Final answer
    x = 124,409.31

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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.