Home / 201,203,541.80-301,805,312.70-139,981,538.60

Finding the Fourth Proportional to 201,203,541.80, 301,805,312.70 and 139,981,538.60

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Solution

The fourth proportional to 201,203,541.80, 301,805,312.70 and 139,981,538.60 is: 209,972,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,203,541.80 : 301,805,312.70 = 139,981,538.60 : x
  2. Step 2: Convert to fraction form
    201,203,541.80/301,805,312.70 = 139,981,538.60/x
  3. Step 3: Cross multiply
    201,203,541.80x = 301,805,312.70 × 139,981,538.60
  4. Step 4: Simplify right side
    201,203,541.80x = 42,247,172,029,400,120
  5. Step 5: Solve for x
    x = 42,247,172,029,400,120/201,203,541.80
  6. Step 6: Final answer
    x = 209,972,307.90

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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.