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Finding the Fourth Proportional to 153,774.64, 212,020.50 and 126,455.28

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Solution

The fourth proportional to 153,774.64, 212,020.50 and 126,455.28 is: 174,353.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,774.64 : 212,020.50 = 126,455.28 : x
  2. Step 2: Convert to fraction form
    153,774.64/212,020.50 = 126,455.28/x
  3. Step 3: Cross multiply
    153,774.64x = 212,020.50 × 126,455.28
  4. Step 4: Simplify right side
    153,774.64x = 26,811,111,693.24
  5. Step 5: Solve for x
    x = 26,811,111,693.24/153,774.64
  6. Step 6: Final answer
    x = 174,353.27

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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.