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Finding the Fourth Proportional to 129,483.64, 194,244.58 and 66,339.48

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Solution

The fourth proportional to 129,483.64, 194,244.58 and 66,339.48 is: 99,519.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,483.64 : 194,244.58 = 66,339.48 : x
  2. Step 2: Convert to fraction form
    129,483.64/194,244.58 = 66,339.48/x
  3. Step 3: Cross multiply
    129,483.64x = 194,244.58 × 66,339.48
  4. Step 4: Simplify right side
    129,483.64x = 12,886,084,430.02
  5. Step 5: Solve for x
    x = 12,886,084,430.02/129,483.64
  6. Step 6: Final answer
    x = 99,519.02

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1.5x scale

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.