Home / 131,790.13-181,870.47-71,360.81

Finding the Fourth Proportional to 131,790.13, 181,870.47 and 71,360.81

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Solution

The fourth proportional to 131,790.13, 181,870.47 and 71,360.81 is: 98,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,790.13 : 181,870.47 = 71,360.81 : x
  2. Step 2: Convert to fraction form
    131,790.13/181,870.47 = 71,360.81/x
  3. Step 3: Cross multiply
    131,790.13x = 181,870.47 × 71,360.81
  4. Step 4: Simplify right side
    131,790.13x = 12,978,424,054.28
  5. Step 5: Solve for x
    x = 12,978,424,054.28/131,790.13
  6. Step 6: Final answer
    x = 98,477.97

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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.