Home / 112,901.06-155,803.28-65,154.40

Finding the Fourth Proportional to 112,901.06, 155,803.28 and 65,154.40

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Solution

The fourth proportional to 112,901.06, 155,803.28 and 65,154.40 is: 89,912.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,901.06 : 155,803.28 = 65,154.40 : x
  2. Step 2: Convert to fraction form
    112,901.06/155,803.28 = 65,154.40/x
  3. Step 3: Cross multiply
    112,901.06x = 155,803.28 × 65,154.40
  4. Step 4: Simplify right side
    112,901.06x = 10,151,269,226.43
  5. Step 5: Solve for x
    x = 10,151,269,226.43/112,901.06
  6. Step 6: Final answer
    x = 89,912.97

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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.