Home / 128,068.63-176,570.38-105,013.50

Finding the Fourth Proportional to 128,068.63, 176,570.38 and 105,013.50

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Solution

The fourth proportional to 128,068.63, 176,570.38 and 105,013.50 is: 144,783.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,068.63 : 176,570.38 = 105,013.50 : x
  2. Step 2: Convert to fraction form
    128,068.63/176,570.38 = 105,013.50/x
  3. Step 3: Cross multiply
    128,068.63x = 176,570.38 × 105,013.50
  4. Step 4: Simplify right side
    128,068.63x = 18,542,273,069.26
  5. Step 5: Solve for x
    x = 18,542,273,069.26/128,068.63
  6. Step 6: Final answer
    x = 144,783.88

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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.