Home / 130,886.70-180,518.67-83,151.78

Finding the Fourth Proportional to 130,886.70, 180,518.67 and 83,151.78

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Solution

The fourth proportional to 130,886.70, 180,518.67 and 83,151.78 is: 114,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,886.70 : 180,518.67 = 83,151.78 : x
  2. Step 2: Convert to fraction form
    130,886.70/180,518.67 = 83,151.78/x
  3. Step 3: Cross multiply
    130,886.70x = 180,518.67 × 83,151.78
  4. Step 4: Simplify right side
    130,886.70x = 15,010,448,733.73
  5. Step 5: Solve for x
    x = 15,010,448,733.73/130,886.70
  6. Step 6: Final answer
    x = 114,682.77

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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.