Home / 131,816.18-181,904.07-71,386.33

Finding the Fourth Proportional to 131,816.18, 181,904.07 and 71,386.33

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Solution

The fourth proportional to 131,816.18, 181,904.07 and 71,386.33 is: 98,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,816.18 : 181,904.07 = 71,386.33 : x
  2. Step 2: Convert to fraction form
    131,816.18/181,904.07 = 71,386.33/x
  3. Step 3: Cross multiply
    131,816.18x = 181,904.07 × 71,386.33
  4. Step 4: Simplify right side
    131,816.18x = 12,985,463,782.30
  5. Step 5: Solve for x
    x = 12,985,463,782.30/131,816.18
  6. Step 6: Final answer
    x = 98,511.91

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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.