Home / 117,345.06-161,893.75-77,080.50

Finding the Fourth Proportional to 117,345.06, 161,893.75 and 77,080.50

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Solution

The fourth proportional to 117,345.06, 161,893.75 and 77,080.50 is: 106,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,345.06 : 161,893.75 = 77,080.50 : x
  2. Step 2: Convert to fraction form
    117,345.06/161,893.75 = 77,080.50/x
  3. Step 3: Cross multiply
    117,345.06x = 161,893.75 × 77,080.50
  4. Step 4: Simplify right side
    117,345.06x = 12,478,851,196.88
  5. Step 5: Solve for x
    x = 12,478,851,196.88/117,345.06
  6. Step 6: Final answer
    x = 106,343.22

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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.