Home / 122,903.20-184,355.36-42,940.80

Finding the Fourth Proportional to 122,903.20, 184,355.36 and 42,940.80

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Solution

The fourth proportional to 122,903.20, 184,355.36 and 42,940.80 is: 64,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,903.20 : 184,355.36 = 42,940.80 : x
  2. Step 2: Convert to fraction form
    122,903.20/184,355.36 = 42,940.80/x
  3. Step 3: Cross multiply
    122,903.20x = 184,355.36 × 42,940.80
  4. Step 4: Simplify right side
    122,903.20x = 7,916,366,642.69
  5. Step 5: Solve for x
    x = 7,916,366,642.69/122,903.20
  6. Step 6: Final answer
    x = 64,411.40

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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.