Home / 117,069.18-161,489.70-74,035.40

Finding the Fourth Proportional to 117,069.18, 161,489.70 and 74,035.40

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Solution

The fourth proportional to 117,069.18, 161,489.70 and 74,035.40 is: 102,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,069.18 : 161,489.70 = 74,035.40 : x
  2. Step 2: Convert to fraction form
    117,069.18/161,489.70 = 74,035.40/x
  3. Step 3: Cross multiply
    117,069.18x = 161,489.70 × 74,035.40
  4. Step 4: Simplify right side
    117,069.18x = 11,955,953,727.93
  5. Step 5: Solve for x
    x = 11,955,953,727.93/117,069.18
  6. Step 6: Final answer
    x = 102,127.25

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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.