Home / 145,093.58-200,248.68-81,434.86

Finding the Fourth Proportional to 145,093.58, 200,248.68 and 81,434.86

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Solution

The fourth proportional to 145,093.58, 200,248.68 and 81,434.86 is: 112,391.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,093.58 : 200,248.68 = 81,434.86 : x
  2. Step 2: Convert to fraction form
    145,093.58/200,248.68 = 81,434.86/x
  3. Step 3: Cross multiply
    145,093.58x = 200,248.68 × 81,434.86
  4. Step 4: Simplify right side
    145,093.58x = 16,307,223,220.98
  5. Step 5: Solve for x
    x = 16,307,223,220.98/145,093.58
  6. Step 6: Final answer
    x = 112,391.07

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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.