Home / 105,191.08-145,169.13-64,342.40

Finding the Fourth Proportional to 105,191.08, 145,169.13 and 64,342.40

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Solution

The fourth proportional to 105,191.08, 145,169.13 and 64,342.40 is: 88,795.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,191.08 : 145,169.13 = 64,342.40 : x
  2. Step 2: Convert to fraction form
    105,191.08/145,169.13 = 64,342.40/x
  3. Step 3: Cross multiply
    105,191.08x = 145,169.13 × 64,342.40
  4. Step 4: Simplify right side
    105,191.08x = 9,340,530,230.11
  5. Step 5: Solve for x
    x = 9,340,530,230.11/105,191.08
  6. Step 6: Final answer
    x = 88,795.84

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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.