Home / 107,804.23-161,509.30-78,148.51

Finding the Fourth Proportional to 107,804.23, 161,509.30 and 78,148.51

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Solution

The fourth proportional to 107,804.23, 161,509.30 and 78,148.51 is: 117,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,804.23 : 161,509.30 = 78,148.51 : x
  2. Step 2: Convert to fraction form
    107,804.23/161,509.30 = 78,148.51/x
  3. Step 3: Cross multiply
    107,804.23x = 161,509.30 × 78,148.51
  4. Step 4: Simplify right side
    107,804.23x = 12,621,711,146.14
  5. Step 5: Solve for x
    x = 12,621,711,146.14/107,804.23
  6. Step 6: Final answer
    x = 117,079.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.