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Finding the Fourth Proportional to 188,302.77, 259,870.55 and 103,420.71

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Solution

The fourth proportional to 188,302.77, 259,870.55 and 103,420.71 is: 142,727.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,302.77 : 259,870.55 = 103,420.71 : x
  2. Step 2: Convert to fraction form
    188,302.77/259,870.55 = 103,420.71/x
  3. Step 3: Cross multiply
    188,302.77x = 259,870.55 × 103,420.71
  4. Step 4: Simplify right side
    188,302.77x = 26,875,996,271.99
  5. Step 5: Solve for x
    x = 26,875,996,271.99/188,302.77
  6. Step 6: Final answer
    x = 142,727.57

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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.