Home / 153,140.28-211,333.78-85,156.52

Finding the Fourth Proportional to 153,140.28, 211,333.78 and 85,156.52

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Solution

The fourth proportional to 153,140.28, 211,333.78 and 85,156.52 is: 117,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,140.28 : 211,333.78 = 85,156.52 : x
  2. Step 2: Convert to fraction form
    153,140.28/211,333.78 = 85,156.52/x
  3. Step 3: Cross multiply
    153,140.28x = 211,333.78 × 85,156.52
  4. Step 4: Simplify right side
    153,140.28x = 17,996,449,263.25
  5. Step 5: Solve for x
    x = 17,996,449,263.25/153,140.28
  6. Step 6: Final answer
    x = 117,516.11

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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.