Home / 130,721.85-180,560.58-107,834.61

Finding the Fourth Proportional to 130,721.85, 180,560.58 and 107,834.61

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Solution

The fourth proportional to 130,721.85, 180,560.58 and 107,834.61 is: 148,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,721.85 : 180,560.58 = 107,834.61 : x
  2. Step 2: Convert to fraction form
    130,721.85/180,560.58 = 107,834.61/x
  3. Step 3: Cross multiply
    130,721.85x = 180,560.58 × 107,834.61
  4. Step 4: Simplify right side
    130,721.85x = 19,470,679,725.67
  5. Step 5: Solve for x
    x = 19,470,679,725.67/130,721.85
  6. Step 6: Final answer
    x = 148,947.40

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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.