Home / 130,498.10-180,078.85-76,772.73

Finding the Fourth Proportional to 130,498.10, 180,078.85 and 76,772.73

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Solution

The fourth proportional to 130,498.10, 180,078.85 and 76,772.73 is: 105,941.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,498.10 : 180,078.85 = 76,772.73 : x
  2. Step 2: Convert to fraction form
    130,498.10/180,078.85 = 76,772.73/x
  3. Step 3: Cross multiply
    130,498.10x = 180,078.85 × 76,772.73
  4. Step 4: Simplify right side
    130,498.10x = 13,825,144,929.76
  5. Step 5: Solve for x
    x = 13,825,144,929.76/130,498.10
  6. Step 6: Final answer
    x = 105,941.35

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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.