Home / 93,315.20-139,972.80-92,440.40

Finding the Fourth Proportional to 93,315.20, 139,972.80 and 92,440.40

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Solution

The fourth proportional to 93,315.20, 139,972.80 and 92,440.40 is: 138,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,315.20 : 139,972.80 = 92,440.40 : x
  2. Step 2: Convert to fraction form
    93,315.20/139,972.80 = 92,440.40/x
  3. Step 3: Cross multiply
    93,315.20x = 139,972.80 × 92,440.40
  4. Step 4: Simplify right side
    93,315.20x = 12,939,141,621.12
  5. Step 5: Solve for x
    x = 12,939,141,621.12/93,315.20
  6. Step 6: Final answer
    x = 138,660.60

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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.