Home / 130,122.55-179,570.51-76,408.21

Finding the Fourth Proportional to 130,122.55, 179,570.51 and 76,408.21

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Solution

The fourth proportional to 130,122.55, 179,570.51 and 76,408.21 is: 105,444.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,122.55 : 179,570.51 = 76,408.21 : x
  2. Step 2: Convert to fraction form
    130,122.55/179,570.51 = 76,408.21/x
  3. Step 3: Cross multiply
    130,122.55x = 179,570.51 × 76,408.21
  4. Step 4: Simplify right side
    130,122.55x = 13,720,660,979.98
  5. Step 5: Solve for x
    x = 13,720,660,979.98/130,122.55
  6. Step 6: Final answer
    x = 105,444.15

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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.