Home / 130,000.14-179,408.52-72,639.63

Finding the Fourth Proportional to 130,000.14, 179,408.52 and 72,639.63

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Solution

The fourth proportional to 130,000.14, 179,408.52 and 72,639.63 is: 100,247.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,000.14 : 179,408.52 = 72,639.63 : x
  2. Step 2: Convert to fraction form
    130,000.14/179,408.52 = 72,639.63/x
  3. Step 3: Cross multiply
    130,000.14x = 179,408.52 × 72,639.63
  4. Step 4: Simplify right side
    130,000.14x = 13,032,168,511.65
  5. Step 5: Solve for x
    x = 13,032,168,511.65/130,000.14
  6. Step 6: Final answer
    x = 100,247.34

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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.