Home / 105,504.12-145,597.48-65,216.84

Finding the Fourth Proportional to 105,504.12, 145,597.48 and 65,216.84

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Solution

The fourth proportional to 105,504.12, 145,597.48 and 65,216.84 is: 90,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,504.12 : 145,597.48 = 65,216.84 : x
  2. Step 2: Convert to fraction form
    105,504.12/145,597.48 = 65,216.84/x
  3. Step 3: Cross multiply
    105,504.12x = 145,597.48 × 65,216.84
  4. Step 4: Simplify right side
    105,504.12x = 9,495,407,557.56
  5. Step 5: Solve for x
    x = 9,495,407,557.56/105,504.12
  6. Step 6: Final answer
    x = 90,000.35

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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.