Home / 157,985.21-218,023.02-86,365.19

Finding the Fourth Proportional to 157,985.21, 218,023.02 and 86,365.19

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Solution

The fourth proportional to 157,985.21, 218,023.02 and 86,365.19 is: 119,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,985.21 : 218,023.02 = 86,365.19 : x
  2. Step 2: Convert to fraction form
    157,985.21/218,023.02 = 86,365.19/x
  3. Step 3: Cross multiply
    157,985.21x = 218,023.02 × 86,365.19
  4. Step 4: Simplify right side
    157,985.21x = 18,829,598,456.56
  5. Step 5: Solve for x
    x = 18,829,598,456.56/157,985.21
  6. Step 6: Final answer
    x = 119,185.83

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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.