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Finding the Fourth Proportional to 112,599.92, 155,347.80 and 72,354.80

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Solution

The fourth proportional to 112,599.92, 155,347.80 and 72,354.80 is: 99,823.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,599.92 : 155,347.80 = 72,354.80 : x
  2. Step 2: Convert to fraction form
    112,599.92/155,347.80 = 72,354.80/x
  3. Step 3: Cross multiply
    112,599.92x = 155,347.80 × 72,354.80
  4. Step 4: Simplify right side
    112,599.92x = 11,240,158,999.44
  5. Step 5: Solve for x
    x = 11,240,158,999.44/112,599.92
  6. Step 6: Final answer
    x = 99,823.86

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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.