Home / 142,433.63-196,541.39-78,762.77

Finding the Fourth Proportional to 142,433.63, 196,541.39 and 78,762.77

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Solution

The fourth proportional to 142,433.63, 196,541.39 and 78,762.77 is: 108,683.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,433.63 : 196,541.39 = 78,762.77 : x
  2. Step 2: Convert to fraction form
    142,433.63/196,541.39 = 78,762.77/x
  3. Step 3: Cross multiply
    142,433.63x = 196,541.39 × 78,762.77
  4. Step 4: Simplify right side
    142,433.63x = 15,480,142,919.53
  5. Step 5: Solve for x
    x = 15,480,142,919.53/142,433.63
  6. Step 6: Final answer
    x = 108,683.21

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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.