Home / 118,171.04-163,136.23-91,253.12

Finding the Fourth Proportional to 118,171.04, 163,136.23 and 91,253.12

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Solution

The fourth proportional to 118,171.04, 163,136.23 and 91,253.12 is: 125,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,171.04 : 163,136.23 = 91,253.12 : x
  2. Step 2: Convert to fraction form
    118,171.04/163,136.23 = 91,253.12/x
  3. Step 3: Cross multiply
    118,171.04x = 163,136.23 × 91,253.12
  4. Step 4: Simplify right side
    118,171.04x = 14,886,688,928.72
  5. Step 5: Solve for x
    x = 14,886,688,928.72/118,171.04
  6. Step 6: Final answer
    x = 125,975.79

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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.