Home / 105,101.11-145,042.59-57,357.54

Finding the Fourth Proportional to 105,101.11, 145,042.59 and 57,357.54

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Solution

The fourth proportional to 105,101.11, 145,042.59 and 57,357.54 is: 79,155.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,101.11 : 145,042.59 = 57,357.54 : x
  2. Step 2: Convert to fraction form
    105,101.11/145,042.59 = 57,357.54/x
  3. Step 3: Cross multiply
    105,101.11x = 145,042.59 × 57,357.54
  4. Step 4: Simplify right side
    105,101.11x = 8,319,286,157.63
  5. Step 5: Solve for x
    x = 8,319,286,157.63/105,101.11
  6. Step 6: Final answer
    x = 79,155.07

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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.