Home / 199,318,847.31-299,130,871.59-90,220,633.86

Finding the Fourth Proportional to 199,318,847.31, 299,130,871.59 and 90,220,633.86

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Solution

The fourth proportional to 199,318,847.31, 299,130,871.59 and 90,220,633.86 is: 135,400,024.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,318,847.31 : 299,130,871.59 = 90,220,633.86 : x
  2. Step 2: Convert to fraction form
    199,318,847.31/299,130,871.59 = 90,220,633.86/x
  3. Step 3: Cross multiply
    199,318,847.31x = 299,130,871.59 × 90,220,633.86
  4. Step 4: Simplify right side
    199,318,847.31x = 26,987,776,841,944,064
  5. Step 5: Solve for x
    x = 26,987,776,841,944,064/199,318,847.31
  6. Step 6: Final answer
    x = 135,400,024.66

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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.