Home / 189,172.59-261,050.05-103,129.47

Finding the Fourth Proportional to 189,172.59, 261,050.05 and 103,129.47

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Solution

The fourth proportional to 189,172.59, 261,050.05 and 103,129.47 is: 142,314.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,172.59 : 261,050.05 = 103,129.47 : x
  2. Step 2: Convert to fraction form
    189,172.59/261,050.05 = 103,129.47/x
  3. Step 3: Cross multiply
    189,172.59x = 261,050.05 × 103,129.47
  4. Step 4: Simplify right side
    189,172.59x = 26,921,953,299.97
  5. Step 5: Solve for x
    x = 26,921,953,299.97/189,172.59
  6. Step 6: Final answer
    x = 142,314.24

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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.