Home / 93,211.20-139,718.34-66,901.68

Finding the Fourth Proportional to 93,211.20, 139,718.34 and 66,901.68

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Solution

The fourth proportional to 93,211.20, 139,718.34 and 66,901.68 is: 100,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,211.20 : 139,718.34 = 66,901.68 : x
  2. Step 2: Convert to fraction form
    93,211.20/139,718.34 = 66,901.68/x
  3. Step 3: Cross multiply
    93,211.20x = 139,718.34 × 66,901.68
  4. Step 4: Simplify right side
    93,211.20x = 9,347,391,672.81
  5. Step 5: Solve for x
    x = 9,347,391,672.81/93,211.20
  6. Step 6: Final answer
    x = 100,281.85

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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.