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Finding the Fourth Proportional to 189,679.76, 261,763.38 and 104,802.32

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Solution

The fourth proportional to 189,679.76, 261,763.38 and 104,802.32 is: 144,630.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,679.76 : 261,763.38 = 104,802.32 : x
  2. Step 2: Convert to fraction form
    189,679.76/261,763.38 = 104,802.32/x
  3. Step 3: Cross multiply
    189,679.76x = 261,763.38 × 104,802.32
  4. Step 4: Simplify right side
    189,679.76x = 27,433,409,515.04
  5. Step 5: Solve for x
    x = 27,433,409,515.04/189,679.76
  6. Step 6: Final answer
    x = 144,630.14

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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.