Home / 121,518.12-182,168.70-65,388.36

Finding the Fourth Proportional to 121,518.12, 182,168.70 and 65,388.36

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Solution

The fourth proportional to 121,518.12, 182,168.70 and 65,388.36 is: 98,024.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,518.12 : 182,168.70 = 65,388.36 : x
  2. Step 2: Convert to fraction form
    121,518.12/182,168.70 = 65,388.36/x
  3. Step 3: Cross multiply
    121,518.12x = 182,168.70 × 65,388.36
  4. Step 4: Simplify right side
    121,518.12x = 11,911,712,536.33
  5. Step 5: Solve for x
    x = 11,911,712,536.33/121,518.12
  6. Step 6: Final answer
    x = 98,024.17

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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.