Home / 103,880.53-143,355.07-56,133.86

Finding the Fourth Proportional to 103,880.53, 143,355.07 and 56,133.86

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Solution

The fourth proportional to 103,880.53, 143,355.07 and 56,133.86 is: 77,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,880.53 : 143,355.07 = 56,133.86 : x
  2. Step 2: Convert to fraction form
    103,880.53/143,355.07 = 56,133.86/x
  3. Step 3: Cross multiply
    103,880.53x = 143,355.07 × 56,133.86
  4. Step 4: Simplify right side
    103,880.53x = 8,047,073,429.67
  5. Step 5: Solve for x
    x = 8,047,073,429.67/103,880.53
  6. Step 6: Final answer
    x = 77,464.69

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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.