Home / 152,157,609-209,977,500.42-86,968,912.68

Finding the Fourth Proportional to 152,157,609, 209,977,500.42 and 86,968,912.68

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Solution

The fourth proportional to 152,157,609, 209,977,500.42 and 86,968,912.68 is: 120,017,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,157,609 : 209,977,500.42 = 86,968,912.68 : x
  2. Step 2: Convert to fraction form
    152,157,609/209,977,500.42 = 86,968,912.68/x
  3. Step 3: Cross multiply
    152,157,609x = 209,977,500.42 × 86,968,912.68
  4. Step 4: Simplify right side
    152,157,609x = 18,261,514,898,791,644
  5. Step 5: Solve for x
    x = 18,261,514,898,791,644/152,157,609
  6. Step 6: Final answer
    x = 120,017,099.50

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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.