Home / 128,118.44-176,796.02-71,533.40

Finding the Fourth Proportional to 128,118.44, 176,796.02 and 71,533.40

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Solution

The fourth proportional to 128,118.44, 176,796.02 and 71,533.40 is: 98,711.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,118.44 : 176,796.02 = 71,533.40 : x
  2. Step 2: Convert to fraction form
    128,118.44/176,796.02 = 71,533.40/x
  3. Step 3: Cross multiply
    128,118.44x = 176,796.02 × 71,533.40
  4. Step 4: Simplify right side
    128,118.44x = 12,646,820,417.07
  5. Step 5: Solve for x
    x = 12,646,820,417.07/128,118.44
  6. Step 6: Final answer
    x = 98,711.95

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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.