Home / 91,430.08-126,219.54-86,546.32

Finding the Fourth Proportional to 91,430.08, 126,219.54 and 86,546.32

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Solution

The fourth proportional to 91,430.08, 126,219.54 and 86,546.32 is: 119,477.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,430.08 : 126,219.54 = 86,546.32 : x
  2. Step 2: Convert to fraction form
    91,430.08/126,219.54 = 86,546.32/x
  3. Step 3: Cross multiply
    91,430.08x = 126,219.54 × 86,546.32
  4. Step 4: Simplify right side
    91,430.08x = 10,923,836,699.09
  5. Step 5: Solve for x
    x = 10,923,836,699.09/91,430.08
  6. Step 6: Final answer
    x = 119,477.49

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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.