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Finding the Fourth Proportional to 130,587.92, 180,118.01 and 119,866.85

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Solution

The fourth proportional to 130,587.92, 180,118.01 and 119,866.85 is: 165,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,587.92 : 180,118.01 = 119,866.85 : x
  2. Step 2: Convert to fraction form
    130,587.92/180,118.01 = 119,866.85/x
  3. Step 3: Cross multiply
    130,587.92x = 180,118.01 × 119,866.85
  4. Step 4: Simplify right side
    130,587.92x = 21,590,177,886.05
  5. Step 5: Solve for x
    x = 21,590,177,886.05/130,587.92
  6. Step 6: Final answer
    x = 165,330.60

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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.