Home / 199,835.04-299,965.95-86,039.21

Finding the Fourth Proportional to 199,835.04, 299,965.95 and 86,039.21

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Solution

The fourth proportional to 199,835.04, 299,965.95 and 86,039.21 is: 129,150.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,835.04 : 299,965.95 = 86,039.21 : x
  2. Step 2: Convert to fraction form
    199,835.04/299,965.95 = 86,039.21/x
  3. Step 3: Cross multiply
    199,835.04x = 299,965.95 × 86,039.21
  4. Step 4: Simplify right side
    199,835.04x = 25,808,831,434.87
  5. Step 5: Solve for x
    x = 25,808,831,434.87/199,835.04
  6. Step 6: Final answer
    x = 129,150.68

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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.