Home / 105,289.42-145,299.05-57,542.76

Finding the Fourth Proportional to 105,289.42, 145,299.05 and 57,542.76

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Solution

The fourth proportional to 105,289.42, 145,299.05 and 57,542.76 is: 79,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,289.42 : 145,299.05 = 57,542.76 : x
  2. Step 2: Convert to fraction form
    105,289.42/145,299.05 = 57,542.76/x
  3. Step 3: Cross multiply
    105,289.42x = 145,299.05 × 57,542.76
  4. Step 4: Simplify right side
    105,289.42x = 8,360,908,362.38
  5. Step 5: Solve for x
    x = 8,360,908,362.38/105,289.42
  6. Step 6: Final answer
    x = 79,408.82

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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.