Home / 105,477.03-145,557.76-57,078.92

Finding the Fourth Proportional to 105,477.03, 145,557.76 and 57,078.92

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Solution

The fourth proportional to 105,477.03, 145,557.76 and 57,078.92 is: 78,768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,477.03 : 145,557.76 = 57,078.92 : x
  2. Step 2: Convert to fraction form
    105,477.03/145,557.76 = 57,078.92/x
  3. Step 3: Cross multiply
    105,477.03x = 145,557.76 × 57,078.92
  4. Step 4: Simplify right side
    105,477.03x = 8,308,279,738.42
  5. Step 5: Solve for x
    x = 8,308,279,738.42/105,477.03
  6. Step 6: Final answer
    x = 78,768.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.