Home / 151,288.36-208,779.47-83,311.65

Finding the Fourth Proportional to 151,288.36, 208,779.47 and 83,311.65

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Solution

The fourth proportional to 151,288.36, 208,779.47 and 83,311.65 is: 114,970.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,288.36 : 208,779.47 = 83,311.65 : x
  2. Step 2: Convert to fraction form
    151,288.36/208,779.47 = 83,311.65/x
  3. Step 3: Cross multiply
    151,288.36x = 208,779.47 × 83,311.65
  4. Step 4: Simplify right side
    151,288.36x = 17,393,762,131.83
  5. Step 5: Solve for x
    x = 17,393,762,131.83/151,288.36
  6. Step 6: Final answer
    x = 114,970.92

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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.