Home / 105,307.94-145,324.96-57,561.48

Finding the Fourth Proportional to 105,307.94, 145,324.96 and 57,561.48

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Solution

The fourth proportional to 105,307.94, 145,324.96 and 57,561.48 is: 79,434.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,307.94 : 145,324.96 = 57,561.48 : x
  2. Step 2: Convert to fraction form
    105,307.94/145,324.96 = 57,561.48/x
  3. Step 3: Cross multiply
    105,307.94x = 145,324.96 × 57,561.48
  4. Step 4: Simplify right side
    105,307.94x = 8,365,119,778.54
  5. Step 5: Solve for x
    x = 8,365,119,778.54/105,307.94
  6. Step 6: Final answer
    x = 79,434.84

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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.