Home / 107,802.23-161,506.31-78,146.51

Finding the Fourth Proportional to 107,802.23, 161,506.31 and 78,146.51

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Solution

The fourth proportional to 107,802.23, 161,506.31 and 78,146.51 is: 117,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,802.23 : 161,506.31 = 78,146.51 : x
  2. Step 2: Convert to fraction form
    107,802.23/161,506.31 = 78,146.51/x
  3. Step 3: Cross multiply
    107,802.23x = 161,506.31 × 78,146.51
  4. Step 4: Simplify right side
    107,802.23x = 12,621,153,271.21
  5. Step 5: Solve for x
    x = 12,621,153,271.21/107,802.23
  6. Step 6: Final answer
    x = 117,076.93

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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.