Home / 145,801.73-201,206.40-82,139.51

Finding the Fourth Proportional to 145,801.73, 201,206.40 and 82,139.51

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Solution

The fourth proportional to 145,801.73, 201,206.40 and 82,139.51 is: 113,352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,801.73 : 201,206.40 = 82,139.51 : x
  2. Step 2: Convert to fraction form
    145,801.73/201,206.40 = 82,139.51/x
  3. Step 3: Cross multiply
    145,801.73x = 201,206.40 × 82,139.51
  4. Step 4: Simplify right side
    145,801.73x = 16,526,995,104.86
  5. Step 5: Solve for x
    x = 16,526,995,104.86/145,801.73
  6. Step 6: Final answer
    x = 113,352.53

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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.