Home / 135,206.02-186,600.53-78,617.39

Finding the Fourth Proportional to 135,206.02, 186,600.53 and 78,617.39

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Solution

The fourth proportional to 135,206.02, 186,600.53 and 78,617.39 is: 108,501.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,206.02 : 186,600.53 = 78,617.39 : x
  2. Step 2: Convert to fraction form
    135,206.02/186,600.53 = 78,617.39/x
  3. Step 3: Cross multiply
    135,206.02x = 186,600.53 × 78,617.39
  4. Step 4: Simplify right side
    135,206.02x = 14,670,046,248.13
  5. Step 5: Solve for x
    x = 14,670,046,248.13/135,206.02
  6. Step 6: Final answer
    x = 108,501.43

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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.