Home / 145,521.24-200,818.55-81,859.50

Finding the Fourth Proportional to 145,521.24, 200,818.55 and 81,859.50

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Solution

The fourth proportional to 145,521.24, 200,818.55 and 81,859.50 is: 112,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,521.24 : 200,818.55 = 81,859.50 : x
  2. Step 2: Convert to fraction form
    145,521.24/200,818.55 = 81,859.50/x
  3. Step 3: Cross multiply
    145,521.24x = 200,818.55 × 81,859.50
  4. Step 4: Simplify right side
    145,521.24x = 16,438,905,684.43
  5. Step 5: Solve for x
    x = 16,438,905,684.43/145,521.24
  6. Step 6: Final answer
    x = 112,965.68

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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.