Home / 118,172.04-163,137.61-91,254.12

Finding the Fourth Proportional to 118,172.04, 163,137.61 and 91,254.12

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Solution

The fourth proportional to 118,172.04, 163,137.61 and 91,254.12 is: 125,977.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,172.04 : 163,137.61 = 91,254.12 : x
  2. Step 2: Convert to fraction form
    118,172.04/163,137.61 = 91,254.12/x
  3. Step 3: Cross multiply
    118,172.04x = 163,137.61 × 91,254.12
  4. Step 4: Simplify right side
    118,172.04x = 14,886,979,039.45
  5. Step 5: Solve for x
    x = 14,886,979,039.45/118,172.04
  6. Step 6: Final answer
    x = 125,977.17

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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.