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Finding the Fourth Proportional to 126,054.48, 189,111.20 and 42,948.48

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Solution

The fourth proportional to 126,054.48, 189,111.20 and 42,948.48 is: 64,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,054.48 : 189,111.20 = 42,948.48 : x
  2. Step 2: Convert to fraction form
    126,054.48/189,111.20 = 42,948.48/x
  3. Step 3: Cross multiply
    126,054.48x = 189,111.20 × 42,948.48
  4. Step 4: Simplify right side
    126,054.48x = 8,122,038,590.98
  5. Step 5: Solve for x
    x = 8,122,038,590.98/126,054.48
  6. Step 6: Final answer
    x = 64,432.76

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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.