Home / 153,864.01-212,330.73-90,189.51

Finding the Fourth Proportional to 153,864.01, 212,330.73 and 90,189.51

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Solution

The fourth proportional to 153,864.01, 212,330.73 and 90,189.51 is: 124,460.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,864.01 : 212,330.73 = 90,189.51 : x
  2. Step 2: Convert to fraction form
    153,864.01/212,330.73 = 90,189.51/x
  3. Step 3: Cross multiply
    153,864.01x = 212,330.73 × 90,189.51
  4. Step 4: Simplify right side
    153,864.01x = 19,150,004,496.64
  5. Step 5: Solve for x
    x = 19,150,004,496.64/153,864.01
  6. Step 6: Final answer
    x = 124,460.58

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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.