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Finding the Fourth Proportional to 125,713, 173,483.94 and 75,428.20

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Solution

The fourth proportional to 125,713, 173,483.94 and 75,428.20 is: 104,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,713 : 173,483.94 = 75,428.20 : x
  2. Step 2: Convert to fraction form
    125,713/173,483.94 = 75,428.20/x
  3. Step 3: Cross multiply
    125,713x = 173,483.94 × 75,428.20
  4. Step 4: Simplify right side
    125,713x = 13,085,581,323.11
  5. Step 5: Solve for x
    x = 13,085,581,323.11/125,713
  6. Step 6: Final answer
    x = 104,090.92

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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.