Home / 135,929.02-187,543.20-82,175

Finding the Fourth Proportional to 135,929.02, 187,543.20 and 82,175

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Solution

The fourth proportional to 135,929.02, 187,543.20 and 82,175 is: 113,378.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,929.02 : 187,543.20 = 82,175 : x
  2. Step 2: Convert to fraction form
    135,929.02/187,543.20 = 82,175/x
  3. Step 3: Cross multiply
    135,929.02x = 187,543.20 × 82,175
  4. Step 4: Simplify right side
    135,929.02x = 15,411,362,460.00
  5. Step 5: Solve for x
    x = 15,411,362,460.00/135,929.02
  6. Step 6: Final answer
    x = 113,378.01

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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.