Home / 128,849.70-193,347.45-89,435.10

Finding the Fourth Proportional to 128,849.70, 193,347.45 and 89,435.10

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Solution

The fourth proportional to 128,849.70, 193,347.45 and 89,435.10 is: 134,203.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,849.70 : 193,347.45 = 89,435.10 : x
  2. Step 2: Convert to fraction form
    128,849.70/193,347.45 = 89,435.10/x
  3. Step 3: Cross multiply
    128,849.70x = 193,347.45 × 89,435.10
  4. Step 4: Simplify right side
    128,849.70x = 17,292,048,525.50
  5. Step 5: Solve for x
    x = 17,292,048,525.50/128,849.70
  6. Step 6: Final answer
    x = 134,203.25

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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.