Home / 128,400,902.10-177,194,246.22-75,463,393.41

Finding the Fourth Proportional to 128,400,902.10, 177,194,246.22 and 75,463,393.41

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Solution

The fourth proportional to 128,400,902.10, 177,194,246.22 and 75,463,393.41 is: 104,140,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,400,902.10 : 177,194,246.22 = 75,463,393.41 : x
  2. Step 2: Convert to fraction form
    128,400,902.10/177,194,246.22 = 75,463,393.41/x
  3. Step 3: Cross multiply
    128,400,902.10x = 177,194,246.22 × 75,463,393.41
  4. Step 4: Simplify right side
    128,400,902.10x = 13,371,679,112,488,264
  5. Step 5: Solve for x
    x = 13,371,679,112,488,264/128,400,902.10
  6. Step 6: Final answer
    x = 104,140,071.40

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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.