Home / 145,523.20-200,782.56-85,108.72

Finding the Fourth Proportional to 145,523.20, 200,782.56 and 85,108.72

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Solution

The fourth proportional to 145,523.20, 200,782.56 and 85,108.72 is: 117,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,523.20 : 200,782.56 = 85,108.72 : x
  2. Step 2: Convert to fraction form
    145,523.20/200,782.56 = 85,108.72/x
  3. Step 3: Cross multiply
    145,523.20x = 200,782.56 × 85,108.72
  4. Step 4: Simplify right side
    145,523.20x = 17,088,346,679.92
  5. Step 5: Solve for x
    x = 17,088,346,679.92/145,523.20
  6. Step 6: Final answer
    x = 117,426.96

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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.