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Finding the Fourth Proportional to 188,430.88, 260,031.68 and 103,546.16

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Solution

The fourth proportional to 188,430.88, 260,031.68 and 103,546.16 is: 142,892.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,430.88 : 260,031.68 = 103,546.16 : x
  2. Step 2: Convert to fraction form
    188,430.88/260,031.68 = 103,546.16/x
  3. Step 3: Cross multiply
    188,430.88x = 260,031.68 × 103,546.16
  4. Step 4: Simplify right side
    188,430.88x = 26,925,281,942.35
  5. Step 5: Solve for x
    x = 26,925,281,942.35/188,430.88
  6. Step 6: Final answer
    x = 142,892.09

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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.