Home / 145,099.90-200,212.59-81,440.38

Finding the Fourth Proportional to 145,099.90, 200,212.59 and 81,440.38

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Solution

The fourth proportional to 145,099.90, 200,212.59 and 81,440.38 is: 112,373.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,099.90 : 200,212.59 = 81,440.38 : x
  2. Step 2: Convert to fraction form
    145,099.90/200,212.59 = 81,440.38/x
  3. Step 3: Cross multiply
    145,099.90x = 200,212.59 × 81,440.38
  4. Step 4: Simplify right side
    145,099.90x = 16,305,389,410.38
  5. Step 5: Solve for x
    x = 16,305,389,410.38/145,099.90
  6. Step 6: Final answer
    x = 112,373.54

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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.