Home / 76,143.67-105,077.00-42,151.46

Finding the Fourth Proportional to 76,143.67, 105,077.00 and 42,151.46

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Solution

The fourth proportional to 76,143.67, 105,077.00 and 42,151.46 is: 58,168.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,143.67 : 105,077.00 = 42,151.46 : x
  2. Step 2: Convert to fraction form
    76,143.67/105,077.00 = 42,151.46/x
  3. Step 3: Cross multiply
    76,143.67x = 105,077.00 × 42,151.46
  4. Step 4: Simplify right side
    76,143.67x = 4,429,148,542.41
  5. Step 5: Solve for x
    x = 4,429,148,542.41/76,143.67
  6. Step 6: Final answer
    x = 58,168.31

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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.