Home / 209,891,352.65-289,742,957.10-135,588,150.57

Finding the Fourth Proportional to 209,891,352.65, 289,742,957.10 and 135,588,150.57

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Solution

The fourth proportional to 209,891,352.65, 289,742,957.10 and 135,588,150.57 is: 187,171,654.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,891,352.65 : 289,742,957.10 = 135,588,150.57 : x
  2. Step 2: Convert to fraction form
    209,891,352.65/289,742,957.10 = 135,588,150.57/x
  3. Step 3: Cross multiply
    209,891,352.65x = 289,742,957.10 × 135,588,150.57
  4. Step 4: Simplify right side
    209,891,352.65x = 39,285,711,693,193,912
  5. Step 5: Solve for x
    x = 39,285,711,693,193,912/209,891,352.65
  6. Step 6: Final answer
    x = 187,171,654.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.