Home / 128,016.02-176,633.84-74,269.91

Finding the Fourth Proportional to 128,016.02, 176,633.84 and 74,269.91

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Solution

The fourth proportional to 128,016.02, 176,633.84 and 74,269.91 is: 102,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,016.02 : 176,633.84 = 74,269.91 : x
  2. Step 2: Convert to fraction form
    128,016.02/176,633.84 = 74,269.91/x
  3. Step 3: Cross multiply
    128,016.02x = 176,633.84 × 74,269.91
  4. Step 4: Simplify right side
    128,016.02x = 13,118,579,028.40
  5. Step 5: Solve for x
    x = 13,118,579,028.40/128,016.02
  6. Step 6: Final answer
    x = 102,476.07

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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.