Home / 112,276.87-154,938.21-66,931.45

Finding the Fourth Proportional to 112,276.87, 154,938.21 and 66,931.45

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Solution

The fourth proportional to 112,276.87, 154,938.21 and 66,931.45 is: 92,363.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,276.87 : 154,938.21 = 66,931.45 : x
  2. Step 2: Convert to fraction form
    112,276.87/154,938.21 = 66,931.45/x
  3. Step 3: Cross multiply
    112,276.87x = 154,938.21 × 66,931.45
  4. Step 4: Simplify right side
    112,276.87x = 10,370,239,055.70
  5. Step 5: Solve for x
    x = 10,370,239,055.70/112,276.87
  6. Step 6: Final answer
    x = 92,363.09

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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.