Home / 130,268.98-179,778.18-72,904.78

Finding the Fourth Proportional to 130,268.98, 179,778.18 and 72,904.78

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Solution

The fourth proportional to 130,268.98, 179,778.18 and 72,904.78 is: 100,612.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,268.98 : 179,778.18 = 72,904.78 : x
  2. Step 2: Convert to fraction form
    130,268.98/179,778.18 = 72,904.78/x
  3. Step 3: Cross multiply
    130,268.98x = 179,778.18 × 72,904.78
  4. Step 4: Simplify right side
    130,268.98x = 13,106,688,661.70
  5. Step 5: Solve for x
    x = 13,106,688,661.70/130,268.98
  6. Step 6: Final answer
    x = 100,612.51

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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.