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Finding the Fourth Proportional to 181,068.19, 249,866.70 and 100,499.11

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Solution

The fourth proportional to 181,068.19, 249,866.70 and 100,499.11 is: 138,684.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,068.19 : 249,866.70 = 100,499.11 : x
  2. Step 2: Convert to fraction form
    181,068.19/249,866.70 = 100,499.11/x
  3. Step 3: Cross multiply
    181,068.19x = 249,866.70 × 100,499.11
  4. Step 4: Simplify right side
    181,068.19x = 25,111,380,968.64
  5. Step 5: Solve for x
    x = 25,111,380,968.64/181,068.19
  6. Step 6: Final answer
    x = 138,684.66

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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.