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Finding the Fourth Proportional to 188,602.61, 260,266.41 and 103,719.67

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Solution

The fourth proportional to 188,602.61, 260,266.41 and 103,719.67 is: 143,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,602.61 : 260,266.41 = 103,719.67 : x
  2. Step 2: Convert to fraction form
    188,602.61/260,266.41 = 103,719.67/x
  3. Step 3: Cross multiply
    188,602.61x = 260,266.41 × 103,719.67
  4. Step 4: Simplify right side
    188,602.61x = 26,994,746,157.28
  5. Step 5: Solve for x
    x = 26,994,746,157.28/188,602.61
  6. Step 6: Final answer
    x = 143,130.29

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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.