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Finding the Fourth Proportional to 126,625.60, 189,784.80 and 56,430.40

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Solution

The fourth proportional to 126,625.60, 189,784.80 and 56,430.40 is: 84,577.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,625.60 : 189,784.80 = 56,430.40 : x
  2. Step 2: Convert to fraction form
    126,625.60/189,784.80 = 56,430.40/x
  3. Step 3: Cross multiply
    126,625.60x = 189,784.80 × 56,430.40
  4. Step 4: Simplify right side
    126,625.60x = 10,709,632,177.92
  5. Step 5: Solve for x
    x = 10,709,632,177.92/126,625.60
  6. Step 6: Final answer
    x = 84,577.15

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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.