Home / 155,983.28-215,431.80-105,594.80

Finding the Fourth Proportional to 155,983.28, 215,431.80 and 105,594.80

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Solution

The fourth proportional to 155,983.28, 215,431.80 and 105,594.80 is: 145,839.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,983.28 : 215,431.80 = 105,594.80 : x
  2. Step 2: Convert to fraction form
    155,983.28/215,431.80 = 105,594.80/x
  3. Step 3: Cross multiply
    155,983.28x = 215,431.80 × 105,594.80
  4. Step 4: Simplify right side
    155,983.28x = 22,748,477,834.64
  5. Step 5: Solve for x
    x = 22,748,477,834.64/155,983.28
  6. Step 6: Final answer
    x = 145,839.21

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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.