Home / 105,211.36-145,189.33-57,464.88

Finding the Fourth Proportional to 105,211.36, 145,189.33 and 57,464.88

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Solution

The fourth proportional to 105,211.36, 145,189.33 and 57,464.88 is: 79,300.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,211.36 : 145,189.33 = 57,464.88 : x
  2. Step 2: Convert to fraction form
    105,211.36/145,189.33 = 57,464.88/x
  3. Step 3: Cross multiply
    105,211.36x = 145,189.33 × 57,464.88
  4. Step 4: Simplify right side
    105,211.36x = 8,343,287,425.73
  5. Step 5: Solve for x
    x = 8,343,287,425.73/105,211.36
  6. Step 6: Final answer
    x = 79,300.25

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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.