Home / 138,317.86-190,873.50-77,062.60

Finding the Fourth Proportional to 138,317.86, 190,873.50 and 77,062.60

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Solution

The fourth proportional to 138,317.86, 190,873.50 and 77,062.60 is: 106,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,317.86 : 190,873.50 = 77,062.60 : x
  2. Step 2: Convert to fraction form
    138,317.86/190,873.50 = 77,062.60/x
  3. Step 3: Cross multiply
    138,317.86x = 190,873.50 × 77,062.60
  4. Step 4: Simplify right side
    138,317.86x = 14,709,208,181.10
  5. Step 5: Solve for x
    x = 14,709,208,181.10/138,317.86
  6. Step 6: Final answer
    x = 106,343.52

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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.