Home / 155,817.79-215,028.47-84,197.80

Finding the Fourth Proportional to 155,817.79, 215,028.47 and 84,197.80

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Solution

The fourth proportional to 155,817.79, 215,028.47 and 84,197.80 is: 116,192.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,817.79 : 215,028.47 = 84,197.80 : x
  2. Step 2: Convert to fraction form
    155,817.79/215,028.47 = 84,197.80/x
  3. Step 3: Cross multiply
    155,817.79x = 215,028.47 × 84,197.80
  4. Step 4: Simplify right side
    155,817.79x = 18,104,923,381.11
  5. Step 5: Solve for x
    x = 18,104,923,381.11/155,817.79
  6. Step 6: Final answer
    x = 116,192.91

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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.