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Finding the Fourth Proportional to 144,720.37, 216,706.69 and 99,880.09

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Solution

The fourth proportional to 144,720.37, 216,706.69 and 99,880.09 is: 149,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,720.37 : 216,706.69 = 99,880.09 : x
  2. Step 2: Convert to fraction form
    144,720.37/216,706.69 = 99,880.09/x
  3. Step 3: Cross multiply
    144,720.37x = 216,706.69 × 99,880.09
  4. Step 4: Simplify right side
    144,720.37x = 21,644,683,283.89
  5. Step 5: Solve for x
    x = 21,644,683,283.89/144,720.37
  6. Step 6: Final answer
    x = 149,562.10

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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.