Home / 131,410.76-181,283.43-86,068.79

Finding the Fourth Proportional to 131,410.76, 181,283.43 and 86,068.79

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Solution

The fourth proportional to 131,410.76, 181,283.43 and 86,068.79 is: 118,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,410.76 : 181,283.43 = 86,068.79 : x
  2. Step 2: Convert to fraction form
    131,410.76/181,283.43 = 86,068.79/x
  3. Step 3: Cross multiply
    131,410.76x = 181,283.43 × 86,068.79
  4. Step 4: Simplify right side
    131,410.76x = 15,602,845,467.15
  5. Step 5: Solve for x
    x = 15,602,845,467.15/131,410.76
  6. Step 6: Final answer
    x = 118,733.39

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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.