Home / 128,026.54-191,667.93-74,555.50

Finding the Fourth Proportional to 128,026.54, 191,667.93 and 74,555.50

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Solution

The fourth proportional to 128,026.54, 191,667.93 and 74,555.50 is: 111,616.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,026.54 : 191,667.93 = 74,555.50 : x
  2. Step 2: Convert to fraction form
    128,026.54/191,667.93 = 74,555.50/x
  3. Step 3: Cross multiply
    128,026.54x = 191,667.93 × 74,555.50
  4. Step 4: Simplify right side
    128,026.54x = 14,289,898,355.12
  5. Step 5: Solve for x
    x = 14,289,898,355.12/128,026.54
  6. Step 6: Final answer
    x = 111,616.69

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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.