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Finding the Fourth Proportional to 129,909.63, 179,275.83 and 70,293.63

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Solution

The fourth proportional to 129,909.63, 179,275.83 and 70,293.63 is: 97,005.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,909.63 : 179,275.83 = 70,293.63 : x
  2. Step 2: Convert to fraction form
    129,909.63/179,275.83 = 70,293.63/x
  3. Step 3: Cross multiply
    129,909.63x = 179,275.83 × 70,293.63
  4. Step 4: Simplify right side
    129,909.63x = 12,601,948,861.96
  5. Step 5: Solve for x
    x = 12,601,948,861.96/129,909.63
  6. Step 6: Final answer
    x = 97,005.50

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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.