Home / 130,516.72-180,125.64-73,155.76

Finding the Fourth Proportional to 130,516.72, 180,125.64 and 73,155.76

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Solution

The fourth proportional to 130,516.72, 180,125.64 and 73,155.76 is: 100,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,516.72 : 180,125.64 = 73,155.76 : x
  2. Step 2: Convert to fraction form
    130,516.72/180,125.64 = 73,155.76/x
  3. Step 3: Cross multiply
    130,516.72x = 180,125.64 × 73,155.76
  4. Step 4: Simplify right side
    130,516.72x = 13,177,228,089.69
  5. Step 5: Solve for x
    x = 13,177,228,089.69/130,516.72
  6. Step 6: Final answer
    x = 100,961.99

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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.