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Finding the Fourth Proportional to 144,004.60, 216,006.90 and 73,145.80

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Solution

The fourth proportional to 144,004.60, 216,006.90 and 73,145.80 is: 109,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,004.60 : 216,006.90 = 73,145.80 : x
  2. Step 2: Convert to fraction form
    144,004.60/216,006.90 = 73,145.80/x
  3. Step 3: Cross multiply
    144,004.60x = 216,006.90 × 73,145.80
  4. Step 4: Simplify right side
    144,004.60x = 15,799,997,506.02
  5. Step 5: Solve for x
    x = 15,799,997,506.02/144,004.60
  6. Step 6: Final answer
    x = 109,718.70

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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.