Home / 135,586.02-187,113.56-81,860.60

Finding the Fourth Proportional to 135,586.02, 187,113.56 and 81,860.60

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Solution

The fourth proportional to 135,586.02, 187,113.56 and 81,860.60 is: 112,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,586.02 : 187,113.56 = 81,860.60 : x
  2. Step 2: Convert to fraction form
    135,586.02/187,113.56 = 81,860.60/x
  3. Step 3: Cross multiply
    135,586.02x = 187,113.56 × 81,860.60
  4. Step 4: Simplify right side
    135,586.02x = 15,317,228,289.74
  5. Step 5: Solve for x
    x = 15,317,228,289.74/135,586.02
  6. Step 6: Final answer
    x = 112,970.56

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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.