Home / 100,346.22-138,571.56-64,598.40

Finding the Fourth Proportional to 100,346.22, 138,571.56 and 64,598.40

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Solution

The fourth proportional to 100,346.22, 138,571.56 and 64,598.40 is: 89,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,346.22 : 138,571.56 = 64,598.40 : x
  2. Step 2: Convert to fraction form
    100,346.22/138,571.56 = 64,598.40/x
  3. Step 3: Cross multiply
    100,346.22x = 138,571.56 × 64,598.40
  4. Step 4: Simplify right side
    100,346.22x = 8,951,501,061.50
  5. Step 5: Solve for x
    x = 8,951,501,061.50/100,346.22
  6. Step 6: Final answer
    x = 89,206.16

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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.