Home / 145,723.74-201,109.05-81,197.25

Finding the Fourth Proportional to 145,723.74, 201,109.05 and 81,197.25

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Solution

The fourth proportional to 145,723.74, 201,109.05 and 81,197.25 is: 112,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,723.74 : 201,109.05 = 81,197.25 : x
  2. Step 2: Convert to fraction form
    145,723.74/201,109.05 = 81,197.25/x
  3. Step 3: Cross multiply
    145,723.74x = 201,109.05 × 81,197.25
  4. Step 4: Simplify right side
    145,723.74x = 16,329,501,810.11
  5. Step 5: Solve for x
    x = 16,329,501,810.11/145,723.74
  6. Step 6: Final answer
    x = 112,057.94

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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.