Home / 180,938.80-249,939.03-139,021.30

Finding the Fourth Proportional to 180,938.80, 249,939.03 and 139,021.30

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Solution

The fourth proportional to 180,938.80, 249,939.03 and 139,021.30 is: 192,036.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,938.80 : 249,939.03 = 139,021.30 : x
  2. Step 2: Convert to fraction form
    180,938.80/249,939.03 = 139,021.30/x
  3. Step 3: Cross multiply
    180,938.80x = 249,939.03 × 139,021.30
  4. Step 4: Simplify right side
    180,938.80x = 34,746,848,871.34
  5. Step 5: Solve for x
    x = 34,746,848,871.34/180,938.80
  6. Step 6: Final answer
    x = 192,036.47

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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.