Home / 91,152.08-125,751.04-57,137.32

Finding the Fourth Proportional to 91,152.08, 125,751.04 and 57,137.32

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Solution

The fourth proportional to 91,152.08, 125,751.04 and 57,137.32 is: 78,825.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,152.08 : 125,751.04 = 57,137.32 : x
  2. Step 2: Convert to fraction form
    91,152.08/125,751.04 = 57,137.32/x
  3. Step 3: Cross multiply
    91,152.08x = 125,751.04 × 57,137.32
  4. Step 4: Simplify right side
    91,152.08x = 7,185,077,412.81
  5. Step 5: Solve for x
    x = 7,185,077,412.81/91,152.08
  6. Step 6: Final answer
    x = 78,825.16

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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.