Home / 102,989.75-142,128.02-58,277.75

Finding the Fourth Proportional to 102,989.75, 142,128.02 and 58,277.75

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Solution

The fourth proportional to 102,989.75, 142,128.02 and 58,277.75 is: 80,424.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,989.75 : 142,128.02 = 58,277.75 : x
  2. Step 2: Convert to fraction form
    102,989.75/142,128.02 = 58,277.75/x
  3. Step 3: Cross multiply
    102,989.75x = 142,128.02 × 58,277.75
  4. Step 4: Simplify right side
    102,989.75x = 8,282,901,217.56
  5. Step 5: Solve for x
    x = 8,282,901,217.56/102,989.75
  6. Step 6: Final answer
    x = 80,424.52

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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.