Home / 91,155.07-136,746.26-31,980.32

Finding the Fourth Proportional to 91,155.07, 136,746.26 and 31,980.32

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Solution

The fourth proportional to 91,155.07, 136,746.26 and 31,980.32 is: 47,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,155.07 : 136,746.26 = 31,980.32 : x
  2. Step 2: Convert to fraction form
    91,155.07/136,746.26 = 31,980.32/x
  3. Step 3: Cross multiply
    91,155.07x = 136,746.26 × 31,980.32
  4. Step 4: Simplify right side
    91,155.07x = 4,373,188,942.69
  5. Step 5: Solve for x
    x = 4,373,188,942.69/91,155.07
  6. Step 6: Final answer
    x = 47,975.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.