Home / 142,507.35-196,629.53-85,917.51

Finding the Fourth Proportional to 142,507.35, 196,629.53 and 85,917.51

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Solution

The fourth proportional to 142,507.35, 196,629.53 and 85,917.51 is: 118,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,507.35 : 196,629.53 = 85,917.51 : x
  2. Step 2: Convert to fraction form
    142,507.35/196,629.53 = 85,917.51/x
  3. Step 3: Cross multiply
    142,507.35x = 196,629.53 × 85,917.51
  4. Step 4: Simplify right side
    142,507.35x = 16,893,919,180.48
  5. Step 5: Solve for x
    x = 16,893,919,180.48/142,507.35
  6. Step 6: Final answer
    x = 118,547.70

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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.