Home / 81,207.56-121,638.50-46,129.16

Finding the Fourth Proportional to 81,207.56, 121,638.50 and 46,129.16

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Solution

The fourth proportional to 81,207.56, 121,638.50 and 46,129.16 is: 69,095.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,207.56 : 121,638.50 = 46,129.16 : x
  2. Step 2: Convert to fraction form
    81,207.56/121,638.50 = 46,129.16/x
  3. Step 3: Cross multiply
    81,207.56x = 121,638.50 × 46,129.16
  4. Step 4: Simplify right side
    81,207.56x = 5,611,081,828.66
  5. Step 5: Solve for x
    x = 5,611,081,828.66/81,207.56
  6. Step 6: Final answer
    x = 69,095.56

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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.