Home / 128,164.18-175,582-123,372.35

Finding the Fourth Proportional to 128,164.18, 175,582 and 123,372.35

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Solution

The fourth proportional to 128,164.18, 175,582 and 123,372.35 is: 169,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,164.18 : 175,582 = 123,372.35 : x
  2. Step 2: Convert to fraction form
    128,164.18/175,582 = 123,372.35/x
  3. Step 3: Cross multiply
    128,164.18x = 175,582 × 123,372.35
  4. Step 4: Simplify right side
    128,164.18x = 21,661,963,957.70
  5. Step 5: Solve for x
    x = 21,661,963,957.70/128,164.18
  6. Step 6: Final answer
    x = 169,017.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.