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Finding the Fourth Proportional to 158,904.60, 238,421.88 and 84,004.80

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Solution

The fourth proportional to 158,904.60, 238,421.88 and 84,004.80 is: 126,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,904.60 : 238,421.88 = 84,004.80 : x
  2. Step 2: Convert to fraction form
    158,904.60/238,421.88 = 84,004.80/x
  3. Step 3: Cross multiply
    158,904.60x = 238,421.88 × 84,004.80
  4. Step 4: Simplify right side
    158,904.60x = 20,028,582,345.02
  5. Step 5: Solve for x
    x = 20,028,582,345.02/158,904.60
  6. Step 6: Final answer
    x = 126,041.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.