Home / 131,628.49-197,055.22-81,547.55

Finding the Fourth Proportional to 131,628.49, 197,055.22 and 81,547.55

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Solution

The fourth proportional to 131,628.49, 197,055.22 and 81,547.55 is: 122,081.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,628.49 : 197,055.22 = 81,547.55 : x
  2. Step 2: Convert to fraction form
    131,628.49/197,055.22 = 81,547.55/x
  3. Step 3: Cross multiply
    131,628.49x = 197,055.22 × 81,547.55
  4. Step 4: Simplify right side
    131,628.49x = 16,069,370,796.41
  5. Step 5: Solve for x
    x = 16,069,370,796.41/131,628.49
  6. Step 6: Final answer
    x = 122,081.26

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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.