Home / 145,533.40-200,835.78-81,871.24

Finding the Fourth Proportional to 145,533.40, 200,835.78 and 81,871.24

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Solution

The fourth proportional to 145,533.40, 200,835.78 and 81,871.24 is: 112,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,533.40 : 200,835.78 = 81,871.24 : x
  2. Step 2: Convert to fraction form
    145,533.40/200,835.78 = 81,871.24/x
  3. Step 3: Cross multiply
    145,533.40x = 200,835.78 × 81,871.24
  4. Step 4: Simplify right side
    145,533.40x = 16,442,674,344.97
  5. Step 5: Solve for x
    x = 16,442,674,344.97/145,533.40
  6. Step 6: Final answer
    x = 112,982.14

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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.