Home / 145,396.08-200,645.64-81,734.40

Finding the Fourth Proportional to 145,396.08, 200,645.64 and 81,734.40

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Solution

The fourth proportional to 145,396.08, 200,645.64 and 81,734.40 is: 112,792.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,396.08 : 200,645.64 = 81,734.40 : x
  2. Step 2: Convert to fraction form
    145,396.08/200,645.64 = 81,734.40/x
  3. Step 3: Cross multiply
    145,396.08x = 200,645.64 × 81,734.40
  4. Step 4: Simplify right side
    145,396.08x = 16,399,650,998.02
  5. Step 5: Solve for x
    x = 16,399,650,998.02/145,396.08
  6. Step 6: Final answer
    x = 112,792.94

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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.