Home / 130,083.81-179,534.70-76,398.18

Finding the Fourth Proportional to 130,083.81, 179,534.70 and 76,398.18

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Solution

The fourth proportional to 130,083.81, 179,534.70 and 76,398.18 is: 105,440.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,083.81 : 179,534.70 = 76,398.18 : x
  2. Step 2: Convert to fraction form
    130,083.81/179,534.70 = 76,398.18/x
  3. Step 3: Cross multiply
    130,083.81x = 179,534.70 × 76,398.18
  4. Step 4: Simplify right side
    130,083.81x = 13,716,124,326.85
  5. Step 5: Solve for x
    x = 13,716,124,326.85/130,083.81
  6. Step 6: Final answer
    x = 105,440.67

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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.