Home / 111,276.68-153,478.06-77,285.23

Finding the Fourth Proportional to 111,276.68, 153,478.06 and 77,285.23

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Solution

The fourth proportional to 111,276.68, 153,478.06 and 77,285.23 is: 106,595.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,276.68 : 153,478.06 = 77,285.23 : x
  2. Step 2: Convert to fraction form
    111,276.68/153,478.06 = 77,285.23/x
  3. Step 3: Cross multiply
    111,276.68x = 153,478.06 × 77,285.23
  4. Step 4: Simplify right side
    111,276.68x = 11,861,586,590.15
  5. Step 5: Solve for x
    x = 11,861,586,590.15/111,276.68
  6. Step 6: Final answer
    x = 106,595.44

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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.