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Finding the Fourth Proportional to 188,528, 260,174.72 and 103,651.20

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Solution

The fourth proportional to 188,528, 260,174.72 and 103,651.20 is: 143,042.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,528 : 260,174.72 = 103,651.20 : x
  2. Step 2: Convert to fraction form
    188,528/260,174.72 = 103,651.20/x
  3. Step 3: Cross multiply
    188,528x = 260,174.72 × 103,651.20
  4. Step 4: Simplify right side
    188,528x = 26,967,421,937.66
  5. Step 5: Solve for x
    x = 26,967,421,937.66/188,528
  6. Step 6: Final answer
    x = 143,042.00

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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.