Home / 145,088.57-200,241.78-81,429.86

Finding the Fourth Proportional to 145,088.57, 200,241.78 and 81,429.86

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Solution

The fourth proportional to 145,088.57, 200,241.78 and 81,429.86 is: 112,384.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,088.57 : 200,241.78 = 81,429.86 : x
  2. Step 2: Convert to fraction form
    145,088.57/200,241.78 = 81,429.86/x
  3. Step 3: Cross multiply
    145,088.57x = 200,241.78 × 81,429.86
  4. Step 4: Simplify right side
    145,088.57x = 16,305,660,111.55
  5. Step 5: Solve for x
    x = 16,305,660,111.55/145,088.57
  6. Step 6: Final answer
    x = 112,384.18

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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.