Home / 93,639.20-140,458.80-90,010.40

Finding the Fourth Proportional to 93,639.20, 140,458.80 and 90,010.40

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Solution

The fourth proportional to 93,639.20, 140,458.80 and 90,010.40 is: 135,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,639.20 : 140,458.80 = 90,010.40 : x
  2. Step 2: Convert to fraction form
    93,639.20/140,458.80 = 90,010.40/x
  3. Step 3: Cross multiply
    93,639.20x = 140,458.80 × 90,010.40
  4. Step 4: Simplify right side
    93,639.20x = 12,642,752,771.52
  5. Step 5: Solve for x
    x = 12,642,752,771.52/93,639.20
  6. Step 6: Final answer
    x = 135,015.60

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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.