Home / 145,000.38-200,103.57-81,342.66

Finding the Fourth Proportional to 145,000.38, 200,103.57 and 81,342.66

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Solution

The fourth proportional to 145,000.38, 200,103.57 and 81,342.66 is: 112,254.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,000.38 : 200,103.57 = 81,342.66 : x
  2. Step 2: Convert to fraction form
    145,000.38/200,103.57 = 81,342.66/x
  3. Step 3: Cross multiply
    145,000.38x = 200,103.57 × 81,342.66
  4. Step 4: Simplify right side
    145,000.38x = 16,276,956,659.30
  5. Step 5: Solve for x
    x = 16,276,956,659.30/145,000.38
  6. Step 6: Final answer
    x = 112,254.58

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1.5x scale

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.