Home / 128,240.04-176,967.94-71,651.80

Finding the Fourth Proportional to 128,240.04, 176,967.94 and 71,651.80

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Solution

The fourth proportional to 128,240.04, 176,967.94 and 71,651.80 is: 98,877.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,240.04 : 176,967.94 = 71,651.80 : x
  2. Step 2: Convert to fraction form
    128,240.04/176,967.94 = 71,651.80/x
  3. Step 3: Cross multiply
    128,240.04x = 176,967.94 × 71,651.80
  4. Step 4: Simplify right side
    128,240.04x = 12,680,071,443.29
  5. Step 5: Solve for x
    x = 12,680,071,443.29/128,240.04
  6. Step 6: Final answer
    x = 98,877.63

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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.