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Finding the Fourth Proportional to 165,907.40, 228,952.43 and 90,455.90

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Solution

The fourth proportional to 165,907.40, 228,952.43 and 90,455.90 is: 124,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,907.40 : 228,952.43 = 90,455.90 : x
  2. Step 2: Convert to fraction form
    165,907.40/228,952.43 = 90,455.90/x
  3. Step 3: Cross multiply
    165,907.40x = 228,952.43 × 90,455.90
  4. Step 4: Simplify right side
    165,907.40x = 20,710,096,515.80
  5. Step 5: Solve for x
    x = 20,710,096,515.80/165,907.40
  6. Step 6: Final answer
    x = 124,829.25

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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.