Home / 157,973.39-217,987.86-89,985.03

Finding the Fourth Proportional to 157,973.39, 217,987.86 and 89,985.03

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Solution

The fourth proportional to 157,973.39, 217,987.86 and 89,985.03 is: 124,170.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,973.39 : 217,987.86 = 89,985.03 : x
  2. Step 2: Convert to fraction form
    157,973.39/217,987.86 = 89,985.03/x
  3. Step 3: Cross multiply
    157,973.39x = 217,987.86 × 89,985.03
  4. Step 4: Simplify right side
    157,973.39x = 19,615,643,135.56
  5. Step 5: Solve for x
    x = 19,615,643,135.56/157,973.39
  6. Step 6: Final answer
    x = 124,170.55

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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.