Home / 189,255.40-261,172.67-103,214.51

Finding the Fourth Proportional to 189,255.40, 261,172.67 and 103,214.51

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Solution

The fourth proportional to 189,255.40, 261,172.67 and 103,214.51 is: 142,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,255.40 : 261,172.67 = 103,214.51 : x
  2. Step 2: Convert to fraction form
    189,255.40/261,172.67 = 103,214.51/x
  3. Step 3: Cross multiply
    189,255.40x = 261,172.67 × 103,214.51
  4. Step 4: Simplify right side
    189,255.40x = 26,956,807,337.51
  5. Step 5: Solve for x
    x = 26,956,807,337.51/189,255.40
  6. Step 6: Final answer
    x = 142,436.13

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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.