Home / 111,051.28-153,220.44-63,287.20

Finding the Fourth Proportional to 111,051.28, 153,220.44 and 63,287.20

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Solution

The fourth proportional to 111,051.28, 153,220.44 and 63,287.20 is: 87,319.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,051.28 : 153,220.44 = 63,287.20 : x
  2. Step 2: Convert to fraction form
    111,051.28/153,220.44 = 63,287.20/x
  3. Step 3: Cross multiply
    111,051.28x = 153,220.44 × 63,287.20
  4. Step 4: Simplify right side
    111,051.28x = 9,696,892,630.37
  5. Step 5: Solve for x
    x = 9,696,892,630.37/111,051.28
  6. Step 6: Final answer
    x = 87,319.05

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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.