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Finding the Fourth Proportional to 130,200.80, 179,678.52 and 76,488.08

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Solution

The fourth proportional to 130,200.80, 179,678.52 and 76,488.08 is: 105,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,200.80 : 179,678.52 = 76,488.08 : x
  2. Step 2: Convert to fraction form
    130,200.80/179,678.52 = 76,488.08/x
  3. Step 3: Cross multiply
    130,200.80x = 179,678.52 × 76,488.08
  4. Step 4: Simplify right side
    130,200.80x = 13,743,265,012.04
  5. Step 5: Solve for x
    x = 13,743,265,012.04/130,200.80
  6. Step 6: Final answer
    x = 105,554.38

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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.