Home / 145,024.54-200,170.65-99,102.78

Finding the Fourth Proportional to 145,024.54, 200,170.65 and 99,102.78

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Solution

The fourth proportional to 145,024.54, 200,170.65 and 99,102.78 is: 136,786.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,024.54 : 200,170.65 = 99,102.78 : x
  2. Step 2: Convert to fraction form
    145,024.54/200,170.65 = 99,102.78/x
  3. Step 3: Cross multiply
    145,024.54x = 200,170.65 × 99,102.78
  4. Step 4: Simplify right side
    145,024.54x = 19,837,466,393.04
  5. Step 5: Solve for x
    x = 19,837,466,393.04/145,024.54
  6. Step 6: Final answer
    x = 136,786.97

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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.