Home / 145,724.28-201,114-85,291.40

Finding the Fourth Proportional to 145,724.28, 201,114 and 85,291.40

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Solution

The fourth proportional to 145,724.28, 201,114 and 85,291.40 is: 117,710.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,724.28 : 201,114 = 85,291.40 : x
  2. Step 2: Convert to fraction form
    145,724.28/201,114 = 85,291.40/x
  3. Step 3: Cross multiply
    145,724.28x = 201,114 × 85,291.40
  4. Step 4: Simplify right side
    145,724.28x = 17,153,293,614.03
  5. Step 5: Solve for x
    x = 17,153,293,614.03/145,724.28
  6. Step 6: Final answer
    x = 117,710.61

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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.