Home / 145,288.53-200,498.00-80,755.74

Finding the Fourth Proportional to 145,288.53, 200,498.00 and 80,755.74

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Solution

The fourth proportional to 145,288.53, 200,498.00 and 80,755.74 is: 111,442.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,288.53 : 200,498.00 = 80,755.74 : x
  2. Step 2: Convert to fraction form
    145,288.53/200,498.00 = 80,755.74/x
  3. Step 3: Cross multiply
    145,288.53x = 200,498.00 × 80,755.74
  4. Step 4: Simplify right side
    145,288.53x = 16,191,363,954.74
  5. Step 5: Solve for x
    x = 16,191,363,954.74/145,288.53
  6. Step 6: Final answer
    x = 111,442.82

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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.