Home / 117,147.02-161,621.06-71,808.62

Finding the Fourth Proportional to 117,147.02, 161,621.06 and 71,808.62

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Solution

The fourth proportional to 117,147.02, 161,621.06 and 71,808.62 is: 99,070.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,147.02 : 161,621.06 = 71,808.62 : x
  2. Step 2: Convert to fraction form
    117,147.02/161,621.06 = 71,808.62/x
  3. Step 3: Cross multiply
    117,147.02x = 161,621.06 × 71,808.62
  4. Step 4: Simplify right side
    117,147.02x = 11,605,785,281.54
  5. Step 5: Solve for x
    x = 11,605,785,281.54/117,147.02
  6. Step 6: Final answer
    x = 99,070.26

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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.