Home / 105,455.34-145,530.88-60,137.66

Finding the Fourth Proportional to 105,455.34, 145,530.88 and 60,137.66

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Solution

The fourth proportional to 105,455.34, 145,530.88 and 60,137.66 is: 82,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.34 : 145,530.88 = 60,137.66 : x
  2. Step 2: Convert to fraction form
    105,455.34/145,530.88 = 60,137.66/x
  3. Step 3: Cross multiply
    105,455.34x = 145,530.88 × 60,137.66
  4. Step 4: Simplify right side
    105,455.34x = 8,751,886,794.42
  5. Step 5: Solve for x
    x = 8,751,886,794.42/105,455.34
  6. Step 6: Final answer
    x = 82,991.40

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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.