Home / 130,543.79-180,107.89-76,083.54

Finding the Fourth Proportional to 130,543.79, 180,107.89 and 76,083.54

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Solution

The fourth proportional to 130,543.79, 180,107.89 and 76,083.54 is: 104,970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,543.79 : 180,107.89 = 76,083.54 : x
  2. Step 2: Convert to fraction form
    130,543.79/180,107.89 = 76,083.54/x
  3. Step 3: Cross multiply
    130,543.79x = 180,107.89 × 76,083.54
  4. Step 4: Simplify right side
    130,543.79x = 13,703,245,853.13
  5. Step 5: Solve for x
    x = 13,703,245,853.13/130,543.79
  6. Step 6: Final answer
    x = 104,970.49

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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.