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Finding the Fourth Proportional to 159,606.04, 220,256.28 and 87,987.28

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Solution

The fourth proportional to 159,606.04, 220,256.28 and 87,987.28 is: 121,422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,606.04 : 220,256.28 = 87,987.28 : x
  2. Step 2: Convert to fraction form
    159,606.04/220,256.28 = 87,987.28/x
  3. Step 3: Cross multiply
    159,606.04x = 220,256.28 × 87,987.28
  4. Step 4: Simplify right side
    159,606.04x = 19,379,750,980.12
  5. Step 5: Solve for x
    x = 19,379,750,980.12/159,606.04
  6. Step 6: Final answer
    x = 121,422.42

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1.5x scale

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.