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Finding the Fourth Proportional to 163,686.40, 225,914.22 and 103,290.08

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Solution

The fourth proportional to 163,686.40, 225,914.22 and 103,290.08 is: 142,557.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,686.40 : 225,914.22 = 103,290.08 : x
  2. Step 2: Convert to fraction form
    163,686.40/225,914.22 = 103,290.08/x
  3. Step 3: Cross multiply
    163,686.40x = 225,914.22 × 103,290.08
  4. Step 4: Simplify right side
    163,686.40x = 23,334,697,856.94
  5. Step 5: Solve for x
    x = 23,334,697,856.94/163,686.40
  6. Step 6: Final answer
    x = 142,557.34

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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.