Home / 168,862.96-253,355.16-78,985.84

Finding the Fourth Proportional to 168,862.96, 253,355.16 and 78,985.84

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Solution

The fourth proportional to 168,862.96, 253,355.16 and 78,985.84 is: 118,507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,862.96 : 253,355.16 = 78,985.84 : x
  2. Step 2: Convert to fraction form
    168,862.96/253,355.16 = 78,985.84/x
  3. Step 3: Cross multiply
    168,862.96x = 253,355.16 × 78,985.84
  4. Step 4: Simplify right side
    168,862.96x = 20,011,470,130.93
  5. Step 5: Solve for x
    x = 20,011,470,130.93/168,862.96
  6. Step 6: Final answer
    x = 118,507.16

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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.