Home / 100,300.08-138,477.12-64,552.34

Finding the Fourth Proportional to 100,300.08, 138,477.12 and 64,552.34

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Solution

The fourth proportional to 100,300.08, 138,477.12 and 64,552.34 is: 89,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,300.08 : 138,477.12 = 64,552.34 : x
  2. Step 2: Convert to fraction form
    100,300.08/138,477.12 = 64,552.34/x
  3. Step 3: Cross multiply
    100,300.08x = 138,477.12 × 64,552.34
  4. Step 4: Simplify right side
    100,300.08x = 8,939,022,132.46
  5. Step 5: Solve for x
    x = 8,939,022,132.46/100,300.08
  6. Step 6: Final answer
    x = 89,122.78

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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.