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Finding the Fourth Proportional to 181,075.34, 249,879.30 and 100,500.50

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Solution

The fourth proportional to 181,075.34, 249,879.30 and 100,500.50 is: 138,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,075.34 : 249,879.30 = 100,500.50 : x
  2. Step 2: Convert to fraction form
    181,075.34/249,879.30 = 100,500.50/x
  3. Step 3: Cross multiply
    181,075.34x = 249,879.30 × 100,500.50
  4. Step 4: Simplify right side
    181,075.34x = 25,112,994,589.65
  5. Step 5: Solve for x
    x = 25,112,994,589.65/181,075.34
  6. Step 6: Final answer
    x = 138,688.10

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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.