Home / 256,603,825.80-354,114,857.16-139,128,129.36

Finding the Fourth Proportional to 256,603,825.80, 354,114,857.16 and 139,128,129.36

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Solution

The fourth proportional to 256,603,825.80, 354,114,857.16 and 139,128,129.36 is: 191,997,673.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,603,825.80 : 354,114,857.16 = 139,128,129.36 : x
  2. Step 2: Convert to fraction form
    256,603,825.80/354,114,857.16 = 139,128,129.36/x
  3. Step 3: Cross multiply
    256,603,825.80x = 354,114,857.16 × 139,128,129.36
  4. Step 4: Simplify right side
    256,603,825.80x = 49,267,337,655,254,408
  5. Step 5: Solve for x
    x = 49,267,337,655,254,408/256,603,825.80
  6. Step 6: Final answer
    x = 191,997,673.85

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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.