Home / 100,289.40-138,362.76-60,004.32

Finding the Fourth Proportional to 100,289.40, 138,362.76 and 60,004.32

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Solution

The fourth proportional to 100,289.40, 138,362.76 and 60,004.32 is: 82,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,289.40 : 138,362.76 = 60,004.32 : x
  2. Step 2: Convert to fraction form
    100,289.40/138,362.76 = 60,004.32/x
  3. Step 3: Cross multiply
    100,289.40x = 138,362.76 × 60,004.32
  4. Step 4: Simplify right side
    100,289.40x = 8,302,363,327.12
  5. Step 5: Solve for x
    x = 8,302,363,327.12/100,289.40
  6. Step 6: Final answer
    x = 82,784.06

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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.