Home / 142,458.75-196,579.89-78,795.18

Finding the Fourth Proportional to 142,458.75, 196,579.89 and 78,795.18

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Solution

The fourth proportional to 142,458.75, 196,579.89 and 78,795.18 is: 108,730.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,458.75 : 196,579.89 = 78,795.18 : x
  2. Step 2: Convert to fraction form
    142,458.75/196,579.89 = 78,795.18/x
  3. Step 3: Cross multiply
    142,458.75x = 196,579.89 × 78,795.18
  4. Step 4: Simplify right side
    142,458.75x = 15,489,547,816.93
  5. Step 5: Solve for x
    x = 15,489,547,816.93/142,458.75
  6. Step 6: Final answer
    x = 108,730.06

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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.