Home / 131,386.70-181,313.82-74,798

Finding the Fourth Proportional to 131,386.70, 181,313.82 and 74,798

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Solution

The fourth proportional to 131,386.70, 181,313.82 and 74,798 is: 103,221.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,386.70 : 181,313.82 = 74,798 : x
  2. Step 2: Convert to fraction form
    131,386.70/181,313.82 = 74,798/x
  3. Step 3: Cross multiply
    131,386.70x = 181,313.82 × 74,798
  4. Step 4: Simplify right side
    131,386.70x = 13,561,911,108.36
  5. Step 5: Solve for x
    x = 13,561,911,108.36/131,386.70
  6. Step 6: Final answer
    x = 103,221.34

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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.