Home / 105,255.14-145,250.40-57,507.47

Finding the Fourth Proportional to 105,255.14, 145,250.40 and 57,507.47

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Solution

The fourth proportional to 105,255.14, 145,250.40 and 57,507.47 is: 79,359.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.14 : 145,250.40 = 57,507.47 : x
  2. Step 2: Convert to fraction form
    105,255.14/145,250.40 = 57,507.47/x
  3. Step 3: Cross multiply
    105,255.14x = 145,250.40 × 57,507.47
  4. Step 4: Simplify right side
    105,255.14x = 8,352,983,020.49
  5. Step 5: Solve for x
    x = 8,352,983,020.49/105,255.14
  6. Step 6: Final answer
    x = 79,359.38

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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.