Home / 189,152.67-261,031.05-103,112.36

Finding the Fourth Proportional to 189,152.67, 261,031.05 and 103,112.36

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Solution

The fourth proportional to 189,152.67, 261,031.05 and 103,112.36 is: 142,295.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,152.67 : 261,031.05 = 103,112.36 : x
  2. Step 2: Convert to fraction form
    189,152.67/261,031.05 = 103,112.36/x
  3. Step 3: Cross multiply
    189,152.67x = 261,031.05 × 103,112.36
  4. Step 4: Simplify right side
    189,152.67x = 26,915,527,598.78
  5. Step 5: Solve for x
    x = 26,915,527,598.78/189,152.67
  6. Step 6: Final answer
    x = 142,295.26

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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.