Home / 105,285.28-145,289.28-57,538.48

Finding the Fourth Proportional to 105,285.28, 145,289.28 and 57,538.48

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Solution

The fourth proportional to 105,285.28, 145,289.28 and 57,538.48 is: 79,400.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,285.28 : 145,289.28 = 57,538.48 : x
  2. Step 2: Convert to fraction form
    105,285.28/145,289.28 = 57,538.48/x
  3. Step 3: Cross multiply
    105,285.28x = 145,289.28 × 57,538.48
  4. Step 4: Simplify right side
    105,285.28x = 8,359,724,331.49
  5. Step 5: Solve for x
    x = 8,359,724,331.49/105,285.28
  6. Step 6: Final answer
    x = 79,400.69

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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.