Home / 143,007.63-197,349.95-78,477.93

Finding the Fourth Proportional to 143,007.63, 197,349.95 and 78,477.93

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Solution

The fourth proportional to 143,007.63, 197,349.95 and 78,477.93 is: 108,299.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,007.63 : 197,349.95 = 78,477.93 : x
  2. Step 2: Convert to fraction form
    143,007.63/197,349.95 = 78,477.93/x
  3. Step 3: Cross multiply
    143,007.63x = 197,349.95 × 78,477.93
  4. Step 4: Simplify right side
    143,007.63x = 15,487,615,757.80
  5. Step 5: Solve for x
    x = 15,487,615,757.80/143,007.63
  6. Step 6: Final answer
    x = 108,299.23

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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.