Home / 103,025.07-142,170.66-57,700.80

Finding the Fourth Proportional to 103,025.07, 142,170.66 and 57,700.80

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Solution

The fourth proportional to 103,025.07, 142,170.66 and 57,700.80 is: 79,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,025.07 : 142,170.66 = 57,700.80 : x
  2. Step 2: Convert to fraction form
    103,025.07/142,170.66 = 57,700.80/x
  3. Step 3: Cross multiply
    103,025.07x = 142,170.66 × 57,700.80
  4. Step 4: Simplify right side
    103,025.07x = 8,203,360,818.53
  5. Step 5: Solve for x
    x = 8,203,360,818.53/103,025.07
  6. Step 6: Final answer
    x = 79,624.90

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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.