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Finding the Fourth Proportional to 140,148.48, 210,222.72 and 69,957.12

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Solution

The fourth proportional to 140,148.48, 210,222.72 and 69,957.12 is: 104,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,148.48 : 210,222.72 = 69,957.12 : x
  2. Step 2: Convert to fraction form
    140,148.48/210,222.72 = 69,957.12/x
  3. Step 3: Cross multiply
    140,148.48x = 210,222.72 × 69,957.12
  4. Step 4: Simplify right side
    140,148.48x = 14,706,576,049.77
  5. Step 5: Solve for x
    x = 14,706,576,049.77/140,148.48
  6. Step 6: Final answer
    x = 104,935.68

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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.