Home / 145,323.09-200,564.67-81,660.89

Finding the Fourth Proportional to 145,323.09, 200,564.67 and 81,660.89

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Solution

The fourth proportional to 145,323.09, 200,564.67 and 81,660.89 is: 112,702.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,323.09 : 200,564.67 = 81,660.89 : x
  2. Step 2: Convert to fraction form
    145,323.09/200,564.67 = 81,660.89/x
  3. Step 3: Cross multiply
    145,323.09x = 200,564.67 × 81,660.89
  4. Step 4: Simplify right side
    145,323.09x = 16,378,288,451.93
  5. Step 5: Solve for x
    x = 16,378,288,451.93/145,323.09
  6. Step 6: Final answer
    x = 112,702.59

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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.