Home / 153,123.14-211,322.85-85,145.06

Finding the Fourth Proportional to 153,123.14, 211,322.85 and 85,145.06

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Solution

The fourth proportional to 153,123.14, 211,322.85 and 85,145.06 is: 117,507.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,123.14 : 211,322.85 = 85,145.06 : x
  2. Step 2: Convert to fraction form
    153,123.14/211,322.85 = 85,145.06/x
  3. Step 3: Cross multiply
    153,123.14x = 211,322.85 × 85,145.06
  4. Step 4: Simplify right side
    153,123.14x = 17,993,096,742.62
  5. Step 5: Solve for x
    x = 17,993,096,742.62/153,123.14
  6. Step 6: Final answer
    x = 117,507.37

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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.