Home / 130,027.53-179,438.06-72,669.21

Finding the Fourth Proportional to 130,027.53, 179,438.06 and 72,669.21

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Solution

The fourth proportional to 130,027.53, 179,438.06 and 72,669.21 is: 100,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,027.53 : 179,438.06 = 72,669.21 : x
  2. Step 2: Convert to fraction form
    130,027.53/179,438.06 = 72,669.21/x
  3. Step 3: Cross multiply
    130,027.53x = 179,438.06 × 72,669.21
  4. Step 4: Simplify right side
    130,027.53x = 13,039,621,700.79
  5. Step 5: Solve for x
    x = 13,039,621,700.79/130,027.53
  6. Step 6: Final answer
    x = 100,283.55

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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.