Home / 155,975.28-215,420.76-105,586.80

Finding the Fourth Proportional to 155,975.28, 215,420.76 and 105,586.80

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Solution

The fourth proportional to 155,975.28, 215,420.76 and 105,586.80 is: 145,828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,975.28 : 215,420.76 = 105,586.80 : x
  2. Step 2: Convert to fraction form
    155,975.28/215,420.76 = 105,586.80/x
  3. Step 3: Cross multiply
    155,975.28x = 215,420.76 × 105,586.80
  4. Step 4: Simplify right side
    155,975.28x = 22,745,588,701.97
  5. Step 5: Solve for x
    x = 22,745,588,701.97/155,975.28
  6. Step 6: Final answer
    x = 145,828.16

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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.