Home / 102,031.09-140,871.51-91,242.40

Finding the Fourth Proportional to 102,031.09, 140,871.51 and 91,242.40

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Solution

The fourth proportional to 102,031.09, 140,871.51 and 91,242.40 is: 125,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,031.09 : 140,871.51 = 91,242.40 : x
  2. Step 2: Convert to fraction form
    102,031.09/140,871.51 = 91,242.40/x
  3. Step 3: Cross multiply
    102,031.09x = 140,871.51 × 91,242.40
  4. Step 4: Simplify right side
    102,031.09x = 12,853,454,664.02
  5. Step 5: Solve for x
    x = 12,853,454,664.02/102,031.09
  6. Step 6: Final answer
    x = 125,975.86

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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.