Home / 81,124.30-121,686.45-46,132.30

Finding the Fourth Proportional to 81,124.30, 121,686.45 and 46,132.30

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Solution

The fourth proportional to 81,124.30, 121,686.45 and 46,132.30 is: 69,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,124.30 : 121,686.45 = 46,132.30 : x
  2. Step 2: Convert to fraction form
    81,124.30/121,686.45 = 46,132.30/x
  3. Step 3: Cross multiply
    81,124.30x = 121,686.45 × 46,132.30
  4. Step 4: Simplify right side
    81,124.30x = 5,613,675,817.34
  5. Step 5: Solve for x
    x = 5,613,675,817.34/81,124.30
  6. Step 6: Final answer
    x = 69,198.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.