Home / 105,090.40-145,024.49-57,343.74

Finding the Fourth Proportional to 105,090.40, 145,024.49 and 57,343.74

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Solution

The fourth proportional to 105,090.40, 145,024.49 and 57,343.74 is: 79,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,090.40 : 145,024.49 = 57,343.74 : x
  2. Step 2: Convert to fraction form
    105,090.40/145,024.49 = 57,343.74/x
  3. Step 3: Cross multiply
    105,090.40x = 145,024.49 × 57,343.74
  4. Step 4: Simplify right side
    105,090.40x = 8,316,246,648.19
  5. Step 5: Solve for x
    x = 8,316,246,648.19/105,090.40
  6. Step 6: Final answer
    x = 79,134.22

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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.