Home / 128,400,902.85-177,194,247.26-75,463,394.16

Finding the Fourth Proportional to 128,400,902.85, 177,194,247.26 and 75,463,394.16

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Solution

The fourth proportional to 128,400,902.85, 177,194,247.26 and 75,463,394.16 is: 104,140,072.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,400,902.85 : 177,194,247.26 = 75,463,394.16 : x
  2. Step 2: Convert to fraction form
    128,400,902.85/177,194,247.26 = 75,463,394.16/x
  3. Step 3: Cross multiply
    128,400,902.85x = 177,194,247.26 × 75,463,394.16
  4. Step 4: Simplify right side
    128,400,902.85x = 13,371,679,323,488,562
  5. Step 5: Solve for x
    x = 13,371,679,323,488,562/128,400,902.85
  6. Step 6: Final answer
    x = 104,140,072.43

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1.5x scale

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.