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Finding the Fourth Proportional to 130,403.50, 179,893.28 and 85,060.92

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Solution

The fourth proportional to 130,403.50, 179,893.28 and 85,060.92 is: 117,342.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,403.50 : 179,893.28 = 85,060.92 : x
  2. Step 2: Convert to fraction form
    130,403.50/179,893.28 = 85,060.92/x
  3. Step 3: Cross multiply
    130,403.50x = 179,893.28 × 85,060.92
  4. Step 4: Simplify right side
    130,403.50x = 15,301,887,898.62
  5. Step 5: Solve for x
    x = 15,301,887,898.62/130,403.50
  6. Step 6: Final answer
    x = 117,342.62

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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.