Home / 105,090.26-145,028.06-57,346.23

Finding the Fourth Proportional to 105,090.26, 145,028.06 and 57,346.23

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Solution

The fourth proportional to 105,090.26, 145,028.06 and 57,346.23 is: 79,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,090.26 : 145,028.06 = 57,346.23 : x
  2. Step 2: Convert to fraction form
    105,090.26/145,028.06 = 57,346.23/x
  3. Step 3: Cross multiply
    105,090.26x = 145,028.06 × 57,346.23
  4. Step 4: Simplify right side
    105,090.26x = 8,316,812,485.21
  5. Step 5: Solve for x
    x = 8,316,812,485.21/105,090.26
  6. Step 6: Final answer
    x = 79,139.71

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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.