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Finding the Fourth Proportional to 117,030.80, 161,549.16 and 74,651.60

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Solution

The fourth proportional to 117,030.80, 161,549.16 and 74,651.60 is: 103,048.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,030.80 : 161,549.16 = 74,651.60 : x
  2. Step 2: Convert to fraction form
    117,030.80/161,549.16 = 74,651.60/x
  3. Step 3: Cross multiply
    117,030.80x = 161,549.16 × 74,651.60
  4. Step 4: Simplify right side
    117,030.80x = 12,059,903,272.66
  5. Step 5: Solve for x
    x = 12,059,903,272.66/117,030.80
  6. Step 6: Final answer
    x = 103,048.97

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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.