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Finding the Fourth Proportional to 153,642.40, 212,189.52 and 125,036.32

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Solution

The fourth proportional to 153,642.40, 212,189.52 and 125,036.32 is: 172,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,642.40 : 212,189.52 = 125,036.32 : x
  2. Step 2: Convert to fraction form
    153,642.40/212,189.52 = 125,036.32/x
  3. Step 3: Cross multiply
    153,642.40x = 212,189.52 × 125,036.32
  4. Step 4: Simplify right side
    153,642.40x = 26,531,396,723.37
  5. Step 5: Solve for x
    x = 26,531,396,723.37/153,642.40
  6. Step 6: Final answer
    x = 172,682.78

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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.