Home / 105,093.20-145,025.88-57,347.12

Finding the Fourth Proportional to 105,093.20, 145,025.88 and 57,347.12

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Solution

The fourth proportional to 105,093.20, 145,025.88 and 57,347.12 is: 79,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,093.20 : 145,025.88 = 57,347.12 : x
  2. Step 2: Convert to fraction form
    105,093.20/145,025.88 = 57,347.12/x
  3. Step 3: Cross multiply
    105,093.20x = 145,025.88 × 57,347.12
  4. Step 4: Simplify right side
    105,093.20x = 8,316,816,543.47
  5. Step 5: Solve for x
    x = 8,316,816,543.47/105,093.20
  6. Step 6: Final answer
    x = 79,137.53

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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.