Home / 130,019.89-179,423.98-72,659.66

Finding the Fourth Proportional to 130,019.89, 179,423.98 and 72,659.66

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Solution

The fourth proportional to 130,019.89, 179,423.98 and 72,659.66 is: 100,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,019.89 : 179,423.98 = 72,659.66 : x
  2. Step 2: Convert to fraction form
    130,019.89/179,423.98 = 72,659.66/x
  3. Step 3: Cross multiply
    130,019.89x = 179,423.98 × 72,659.66
  4. Step 4: Simplify right side
    130,019.89x = 13,036,885,382.65
  5. Step 5: Solve for x
    x = 13,036,885,382.65/130,019.89
  6. Step 6: Final answer
    x = 100,268.39

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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.