Home / 131,640.69-181,637.31-77,898.81

Finding the Fourth Proportional to 131,640.69, 181,637.31 and 77,898.81

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Solution

The fourth proportional to 131,640.69, 181,637.31 and 77,898.81 is: 107,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,640.69 : 181,637.31 = 77,898.81 : x
  2. Step 2: Convert to fraction form
    131,640.69/181,637.31 = 77,898.81/x
  3. Step 3: Cross multiply
    131,640.69x = 181,637.31 × 77,898.81
  4. Step 4: Simplify right side
    131,640.69x = 14,149,330,300.60
  5. Step 5: Solve for x
    x = 14,149,330,300.60/131,640.69
  6. Step 6: Final answer
    x = 107,484.47

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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.