Home / 85,137.48-117,429.30-72,302.04

Finding the Fourth Proportional to 85,137.48, 117,429.30 and 72,302.04

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Solution

The fourth proportional to 85,137.48, 117,429.30 and 72,302.04 is: 99,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,137.48 : 117,429.30 = 72,302.04 : x
  2. Step 2: Convert to fraction form
    85,137.48/117,429.30 = 72,302.04/x
  3. Step 3: Cross multiply
    85,137.48x = 117,429.30 × 72,302.04
  4. Step 4: Simplify right side
    85,137.48x = 8,490,377,945.77
  5. Step 5: Solve for x
    x = 8,490,377,945.77/85,137.48
  6. Step 6: Final answer
    x = 99,725.50

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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.