Home / 189,429.16-261,412.80-103,388.93

Finding the Fourth Proportional to 189,429.16, 261,412.80 and 103,388.93

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Solution

The fourth proportional to 189,429.16, 261,412.80 and 103,388.93 is: 142,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,429.16 : 261,412.80 = 103,388.93 : x
  2. Step 2: Convert to fraction form
    189,429.16/261,412.80 = 103,388.93/x
  3. Step 3: Cross multiply
    189,429.16x = 261,412.80 × 103,388.93
  4. Step 4: Simplify right side
    189,429.16x = 27,027,190,333.84
  5. Step 5: Solve for x
    x = 27,027,190,333.84/189,429.16
  6. Step 6: Final answer
    x = 142,677.03

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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.