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Finding the Fourth Proportional to 145,509.53, 200,804.81 and 81,846.77

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Solution

The fourth proportional to 145,509.53, 200,804.81 and 81,846.77 is: 112,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,509.53 : 200,804.81 = 81,846.77 : x
  2. Step 2: Convert to fraction form
    145,509.53/200,804.81 = 81,846.77/x
  3. Step 3: Cross multiply
    145,509.53x = 200,804.81 × 81,846.77
  4. Step 4: Simplify right side
    145,509.53x = 16,435,223,685.71
  5. Step 5: Solve for x
    x = 16,435,223,685.71/145,509.53
  6. Step 6: Final answer
    x = 112,949.47

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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.