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Finding the Fourth Proportional to 128,053.32, 176,801.04 and 82,840.74

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Solution

The fourth proportional to 128,053.32, 176,801.04 and 82,840.74 is: 114,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,053.32 : 176,801.04 = 82,840.74 : x
  2. Step 2: Convert to fraction form
    128,053.32/176,801.04 = 82,840.74/x
  3. Step 3: Cross multiply
    128,053.32x = 176,801.04 × 82,840.74
  4. Step 4: Simplify right side
    128,053.32x = 14,646,328,986.37
  5. Step 5: Solve for x
    x = 14,646,328,986.37/128,053.32
  6. Step 6: Final answer
    x = 114,376.80

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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.