Home / 145,325.60-200,526-81,663.20

Finding the Fourth Proportional to 145,325.60, 200,526 and 81,663.20

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Solution

The fourth proportional to 145,325.60, 200,526 and 81,663.20 is: 112,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,325.60 : 200,526 = 81,663.20 : x
  2. Step 2: Convert to fraction form
    145,325.60/200,526 = 81,663.20/x
  3. Step 3: Cross multiply
    145,325.60x = 200,526 × 81,663.20
  4. Step 4: Simplify right side
    145,325.60x = 16,375,594,843.20
  5. Step 5: Solve for x
    x = 16,375,594,843.20/145,325.60
  6. Step 6: Final answer
    x = 112,682.11

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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.