Home / 145,739.07-201,114.61-81,204.97

Finding the Fourth Proportional to 145,739.07, 201,114.61 and 81,204.97

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Solution

The fourth proportional to 145,739.07, 201,114.61 and 81,204.97 is: 112,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,739.07 : 201,114.61 = 81,204.97 : x
  2. Step 2: Convert to fraction form
    145,739.07/201,114.61 = 81,204.97/x
  3. Step 3: Cross multiply
    145,739.07x = 201,114.61 × 81,204.97
  4. Step 4: Simplify right side
    145,739.07x = 16,331,506,171.39
  5. Step 5: Solve for x
    x = 16,331,506,171.39/145,739.07
  6. Step 6: Final answer
    x = 112,059.90

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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.