Home / 105,245.04-145,279.71-64,975.08

Finding the Fourth Proportional to 105,245.04, 145,279.71 and 64,975.08

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Solution

The fourth proportional to 105,245.04, 145,279.71 and 64,975.08 is: 89,691.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,245.04 : 145,279.71 = 64,975.08 : x
  2. Step 2: Convert to fraction form
    105,245.04/145,279.71 = 64,975.08/x
  3. Step 3: Cross multiply
    105,245.04x = 145,279.71 × 64,975.08
  4. Step 4: Simplify right side
    105,245.04x = 9,439,560,779.63
  5. Step 5: Solve for x
    x = 9,439,560,779.63/105,245.04
  6. Step 6: Final answer
    x = 89,691.27

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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.