Home / 93,021.40-139,378.20-53,509.60

Finding the Fourth Proportional to 93,021.40, 139,378.20 and 53,509.60

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Solution

The fourth proportional to 93,021.40, 139,378.20 and 53,509.60 is: 80,175.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,021.40 : 139,378.20 = 53,509.60 : x
  2. Step 2: Convert to fraction form
    93,021.40/139,378.20 = 53,509.60/x
  3. Step 3: Cross multiply
    93,021.40x = 139,378.20 × 53,509.60
  4. Step 4: Simplify right side
    93,021.40x = 7,458,071,730.72
  5. Step 5: Solve for x
    x = 7,458,071,730.72/93,021.40
  6. Step 6: Final answer
    x = 80,175.87

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1.5x scale

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.