Home / 145,961.84-201,310.68-100,629.40

Finding the Fourth Proportional to 145,961.84, 201,310.68 and 100,629.40

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Solution

The fourth proportional to 145,961.84, 201,310.68 and 100,629.40 is: 138,788.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,961.84 : 201,310.68 = 100,629.40 : x
  2. Step 2: Convert to fraction form
    145,961.84/201,310.68 = 100,629.40/x
  3. Step 3: Cross multiply
    145,961.84x = 201,310.68 × 100,629.40
  4. Step 4: Simplify right side
    145,961.84x = 20,257,772,941.99
  5. Step 5: Solve for x
    x = 20,257,772,941.99/145,961.84
  6. Step 6: Final answer
    x = 138,788.14

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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.