Home / 130,178.15-179,640.32-75,730.45

Finding the Fourth Proportional to 130,178.15, 179,640.32 and 75,730.45

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Solution

The fourth proportional to 130,178.15, 179,640.32 and 75,730.45 is: 104,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,178.15 : 179,640.32 = 75,730.45 : x
  2. Step 2: Convert to fraction form
    130,178.15/179,640.32 = 75,730.45/x
  3. Step 3: Cross multiply
    130,178.15x = 179,640.32 × 75,730.45
  4. Step 4: Simplify right side
    130,178.15x = 13,604,242,271.74
  5. Step 5: Solve for x
    x = 13,604,242,271.74/130,178.15
  6. Step 6: Final answer
    x = 104,504.81

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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.