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Finding the Fourth Proportional to 127,484.80, 191,162.40 and 74,910.40

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Solution

The fourth proportional to 127,484.80, 191,162.40 and 74,910.40 is: 112,327.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,484.80 : 191,162.40 = 74,910.40 : x
  2. Step 2: Convert to fraction form
    127,484.80/191,162.40 = 74,910.40/x
  3. Step 3: Cross multiply
    127,484.80x = 191,162.40 × 74,910.40
  4. Step 4: Simplify right side
    127,484.80x = 14,320,051,848.96
  5. Step 5: Solve for x
    x = 14,320,051,848.96/127,484.80
  6. Step 6: Final answer
    x = 112,327.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.