Home / 131,602.84-181,528.31-86,283.76

Finding the Fourth Proportional to 131,602.84, 181,528.31 and 86,283.76

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Solution

The fourth proportional to 131,602.84, 181,528.31 and 86,283.76 is: 119,016.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,602.84 : 181,528.31 = 86,283.76 : x
  2. Step 2: Convert to fraction form
    131,602.84/181,528.31 = 86,283.76/x
  3. Step 3: Cross multiply
    131,602.84x = 181,528.31 × 86,283.76
  4. Step 4: Simplify right side
    131,602.84x = 15,662,945,133.25
  5. Step 5: Solve for x
    x = 15,662,945,133.25/131,602.84
  6. Step 6: Final answer
    x = 119,016.77

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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.