Home / 122,653.72-169,268.16-74,899.36

Finding the Fourth Proportional to 122,653.72, 169,268.16 and 74,899.36

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Solution

The fourth proportional to 122,653.72, 169,268.16 and 74,899.36 is: 103,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,653.72 : 169,268.16 = 74,899.36 : x
  2. Step 2: Convert to fraction form
    122,653.72/169,268.16 = 74,899.36/x
  3. Step 3: Cross multiply
    122,653.72x = 169,268.16 × 74,899.36
  4. Step 4: Simplify right side
    122,653.72x = 12,678,076,852.38
  5. Step 5: Solve for x
    x = 12,678,076,852.38/122,653.72
  6. Step 6: Final answer
    x = 103,364.80

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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.