Home / 145,427.67-200,622.83-85,000.86

Finding the Fourth Proportional to 145,427.67, 200,622.83 and 85,000.86

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Solution

The fourth proportional to 145,427.67, 200,622.83 and 85,000.86 is: 117,261.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,427.67 : 200,622.83 = 85,000.86 : x
  2. Step 2: Convert to fraction form
    145,427.67/200,622.83 = 85,000.86/x
  3. Step 3: Cross multiply
    145,427.67x = 200,622.83 × 85,000.86
  4. Step 4: Simplify right side
    145,427.67x = 17,053,112,660.63
  5. Step 5: Solve for x
    x = 17,053,112,660.63/145,427.67
  6. Step 6: Final answer
    x = 117,261.82

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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.