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Finding the Fourth Proportional to 144,037.80, 216,056.70 and 81,829.80

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Solution

The fourth proportional to 144,037.80, 216,056.70 and 81,829.80 is: 122,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,037.80 : 216,056.70 = 81,829.80 : x
  2. Step 2: Convert to fraction form
    144,037.80/216,056.70 = 81,829.80/x
  3. Step 3: Cross multiply
    144,037.80x = 216,056.70 × 81,829.80
  4. Step 4: Simplify right side
    144,037.80x = 17,679,876,549.66
  5. Step 5: Solve for x
    x = 17,679,876,549.66/144,037.80
  6. Step 6: Final answer
    x = 122,744.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.