Home / 145,743.66-201,140.60-85,310.64

Finding the Fourth Proportional to 145,743.66, 201,140.60 and 85,310.64

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Solution

The fourth proportional to 145,743.66, 201,140.60 and 85,310.64 is: 117,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,743.66 : 201,140.60 = 85,310.64 : x
  2. Step 2: Convert to fraction form
    145,743.66/201,140.60 = 85,310.64/x
  3. Step 3: Cross multiply
    145,743.66x = 201,140.60 × 85,310.64
  4. Step 4: Simplify right side
    145,743.66x = 17,159,432,889.43
  5. Step 5: Solve for x
    x = 17,159,432,889.43/145,743.66
  6. Step 6: Final answer
    x = 117,737.08

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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.