Home / 105,090.79-145,024.09-57,344.94

Finding the Fourth Proportional to 105,090.79, 145,024.09 and 57,344.94

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Solution

The fourth proportional to 105,090.79, 145,024.09 and 57,344.94 is: 79,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,090.79 : 145,024.09 = 57,344.94 : x
  2. Step 2: Convert to fraction form
    105,090.79/145,024.09 = 57,344.94/x
  3. Step 3: Cross multiply
    105,090.79x = 145,024.09 × 57,344.94
  4. Step 4: Simplify right side
    105,090.79x = 8,316,397,739.60
  5. Step 5: Solve for x
    x = 8,316,397,739.60/105,090.79
  6. Step 6: Final answer
    x = 79,135.36

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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.