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Finding the Fourth Proportional to 130,591.72, 180,215.94 and 70,975.72

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Solution

The fourth proportional to 130,591.72, 180,215.94 and 70,975.72 is: 97,946.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,591.72 : 180,215.94 = 70,975.72 : x
  2. Step 2: Convert to fraction form
    130,591.72/180,215.94 = 70,975.72/x
  3. Step 3: Cross multiply
    130,591.72x = 180,215.94 × 70,975.72
  4. Step 4: Simplify right side
    130,591.72x = 12,790,956,096.98
  5. Step 5: Solve for x
    x = 12,790,956,096.98/130,591.72
  6. Step 6: Final answer
    x = 97,946.15

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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.