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Finding the Fourth Proportional to 125,712.50, 173,483.25 and 75,427.70

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Solution

The fourth proportional to 125,712.50, 173,483.25 and 75,427.70 is: 104,090.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,712.50 : 173,483.25 = 75,427.70 : x
  2. Step 2: Convert to fraction form
    125,712.50/173,483.25 = 75,427.70/x
  3. Step 3: Cross multiply
    125,712.50x = 173,483.25 × 75,427.70
  4. Step 4: Simplify right side
    125,712.50x = 13,085,442,536.03
  5. Step 5: Solve for x
    x = 13,085,442,536.03/125,712.50
  6. Step 6: Final answer
    x = 104,090.23

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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.