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Finding the Fourth Proportional to 165,995.76, 249,009.12 and 66,131.76

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Solution

The fourth proportional to 165,995.76, 249,009.12 and 66,131.76 is: 99,203.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,995.76 : 249,009.12 = 66,131.76 : x
  2. Step 2: Convert to fraction form
    165,995.76/249,009.12 = 66,131.76/x
  3. Step 3: Cross multiply
    165,995.76x = 249,009.12 × 66,131.76
  4. Step 4: Simplify right side
    165,995.76x = 16,467,411,361.65
  5. Step 5: Solve for x
    x = 16,467,411,361.65/165,995.76
  6. Step 6: Final answer
    x = 99,203.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.