Home / 129,435.39-178,616.00-72,076.77

Finding the Fourth Proportional to 129,435.39, 178,616.00 and 72,076.77

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Solution

The fourth proportional to 129,435.39, 178,616.00 and 72,076.77 is: 99,463.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,435.39 : 178,616.00 = 72,076.77 : x
  2. Step 2: Convert to fraction form
    129,435.39/178,616.00 = 72,076.77/x
  3. Step 3: Cross multiply
    129,435.39x = 178,616.00 × 72,076.77
  4. Step 4: Simplify right side
    129,435.39x = 12,874,064,530.51
  5. Step 5: Solve for x
    x = 12,874,064,530.51/129,435.39
  6. Step 6: Final answer
    x = 99,463.25

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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.