Home / 131,740.83-181,802.39-71,311.28

Finding the Fourth Proportional to 131,740.83, 181,802.39 and 71,311.28

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Solution

The fourth proportional to 131,740.83, 181,802.39 and 71,311.28 is: 98,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,740.83 : 181,802.39 = 71,311.28 : x
  2. Step 2: Convert to fraction form
    131,740.83/181,802.39 = 71,311.28/x
  3. Step 3: Cross multiply
    131,740.83x = 181,802.39 × 71,311.28
  4. Step 4: Simplify right side
    131,740.83x = 12,964,559,872.39
  5. Step 5: Solve for x
    x = 12,964,559,872.39/131,740.83
  6. Step 6: Final answer
    x = 98,409.58

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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.