Home / 140,439.90-210,561.42-51,681.87

Finding the Fourth Proportional to 140,439.90, 210,561.42 and 51,681.87

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Solution

The fourth proportional to 140,439.90, 210,561.42 and 51,681.87 is: 77,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,439.90 : 210,561.42 = 51,681.87 : x
  2. Step 2: Convert to fraction form
    140,439.90/210,561.42 = 51,681.87/x
  3. Step 3: Cross multiply
    140,439.90x = 210,561.42 × 51,681.87
  4. Step 4: Simplify right side
    140,439.90x = 10,882,207,935.46
  5. Step 5: Solve for x
    x = 10,882,207,935.46/140,439.90
  6. Step 6: Final answer
    x = 77,486.58

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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.