Home / 130,319.04-179,825.12-72,961.60

Finding the Fourth Proportional to 130,319.04, 179,825.12 and 72,961.60

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Solution

The fourth proportional to 130,319.04, 179,825.12 and 72,961.60 is: 100,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,319.04 : 179,825.12 = 72,961.60 : x
  2. Step 2: Convert to fraction form
    130,319.04/179,825.12 = 72,961.60/x
  3. Step 3: Cross multiply
    130,319.04x = 179,825.12 × 72,961.60
  4. Step 4: Simplify right side
    130,319.04x = 13,120,328,475.39
  5. Step 5: Solve for x
    x = 13,120,328,475.39/130,319.04
  6. Step 6: Final answer
    x = 100,678.52

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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.