Home / 143,985.68-198,607.73-87,397.06

Finding the Fourth Proportional to 143,985.68, 198,607.73 and 87,397.06

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Solution

The fourth proportional to 143,985.68, 198,607.73 and 87,397.06 is: 120,551.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,985.68 : 198,607.73 = 87,397.06 : x
  2. Step 2: Convert to fraction form
    143,985.68/198,607.73 = 87,397.06/x
  3. Step 3: Cross multiply
    143,985.68x = 198,607.73 × 87,397.06
  4. Step 4: Simplify right side
    143,985.68x = 17,357,730,265.25
  5. Step 5: Solve for x
    x = 17,357,730,265.25/143,985.68
  6. Step 6: Final answer
    x = 120,551.78

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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.