Home / 139,954.23-209,931.57-42,581.70

Finding the Fourth Proportional to 139,954.23, 209,931.57 and 42,581.70

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Solution

The fourth proportional to 139,954.23, 209,931.57 and 42,581.70 is: 63,872.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,954.23 : 209,931.57 = 42,581.70 : x
  2. Step 2: Convert to fraction form
    139,954.23/209,931.57 = 42,581.70/x
  3. Step 3: Cross multiply
    139,954.23x = 209,931.57 × 42,581.70
  4. Step 4: Simplify right side
    139,954.23x = 8,939,243,134.27
  5. Step 5: Solve for x
    x = 8,939,243,134.27/139,954.23
  6. Step 6: Final answer
    x = 63,872.62

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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.