Home / 201,204,021.40-301,806,032.10-139,982,018.20

Finding the Fourth Proportional to 201,204,021.40, 301,806,032.10 and 139,982,018.20

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Solution

The fourth proportional to 201,204,021.40, 301,806,032.10 and 139,982,018.20 is: 209,973,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,204,021.40 : 301,806,032.10 = 139,982,018.20 : x
  2. Step 2: Convert to fraction form
    201,204,021.40/301,806,032.10 = 139,982,018.20/x
  3. Step 3: Cross multiply
    201,204,021.40x = 301,806,032.10 × 139,982,018.20
  4. Step 4: Simplify right side
    201,204,021.40x = 42,247,417,478,291,984
  5. Step 5: Solve for x
    x = 42,247,417,478,291,984/201,204,021.40
  6. Step 6: Final answer
    x = 209,973,027.30

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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.