Home / 155,935.23-215,190.50-84,315.21

Finding the Fourth Proportional to 155,935.23, 215,190.50 and 84,315.21

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Solution

The fourth proportional to 155,935.23, 215,190.50 and 84,315.21 is: 116,354.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,935.23 : 215,190.50 = 84,315.21 : x
  2. Step 2: Convert to fraction form
    155,935.23/215,190.50 = 84,315.21/x
  3. Step 3: Cross multiply
    155,935.23x = 215,190.50 × 84,315.21
  4. Step 4: Simplify right side
    155,935.23x = 18,143,831,775.93
  5. Step 5: Solve for x
    x = 18,143,831,775.93/155,935.23
  6. Step 6: Final answer
    x = 116,354.92

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1.5x scale

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.