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Finding the Fourth Proportional to 125,501.51, 188,002.29 and 91,838.45

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Solution

The fourth proportional to 125,501.51, 188,002.29 and 91,838.45 is: 137,574.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,501.51 : 188,002.29 = 91,838.45 : x
  2. Step 2: Convert to fraction form
    125,501.51/188,002.29 = 91,838.45/x
  3. Step 3: Cross multiply
    125,501.51x = 188,002.29 × 91,838.45
  4. Step 4: Simplify right side
    125,501.51x = 17,265,838,910.05
  5. Step 5: Solve for x
    x = 17,265,838,910.05/125,501.51
  6. Step 6: Final answer
    x = 137,574.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.