Home / 74,200.20-102,411.74-68,222.40

Finding the Fourth Proportional to 74,200.20, 102,411.74 and 68,222.40

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Solution

The fourth proportional to 74,200.20, 102,411.74 and 68,222.40 is: 94,161.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,200.20 : 102,411.74 = 68,222.40 : x
  2. Step 2: Convert to fraction form
    74,200.20/102,411.74 = 68,222.40/x
  3. Step 3: Cross multiply
    74,200.20x = 102,411.74 × 68,222.40
  4. Step 4: Simplify right side
    74,200.20x = 6,986,774,477.49
  5. Step 5: Solve for x
    x = 6,986,774,477.49/74,200.20
  6. Step 6: Final answer
    x = 94,161.13

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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.