Home / 180,908.05-249,668.40-100,361.50

Finding the Fourth Proportional to 180,908.05, 249,668.40 and 100,361.50

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Solution

The fourth proportional to 180,908.05, 249,668.40 and 100,361.50 is: 138,507.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,908.05 : 249,668.40 = 100,361.50 : x
  2. Step 2: Convert to fraction form
    180,908.05/249,668.40 = 100,361.50/x
  3. Step 3: Cross multiply
    180,908.05x = 249,668.40 × 100,361.50
  4. Step 4: Simplify right side
    180,908.05x = 25,057,095,126.60
  5. Step 5: Solve for x
    x = 25,057,095,126.60/180,908.05
  6. Step 6: Final answer
    x = 138,507.35

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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.