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Finding the Fourth Proportional to 140,371,986.70, 210,557,980.05 and 140,371,986.70

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Solution

The fourth proportional to 140,371,986.70, 210,557,980.05 and 140,371,986.70 is: 210,557,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,371,986.70 : 210,557,980.05 = 140,371,986.70 : x
  2. Step 2: Convert to fraction form
    140,371,986.70/210,557,980.05 = 140,371,986.70/x
  3. Step 3: Cross multiply
    140,371,986.70x = 210,557,980.05 × 140,371,986.70
  4. Step 4: Simplify right side
    140,371,986.70x = 29,556,441,975,157,464
  5. Step 5: Solve for x
    x = 29,556,441,975,157,464/140,371,986.70
  6. Step 6: Final answer
    x = 210,557,980.05

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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.