Home / 130,755.69-180,382.86-77,014.98

Finding the Fourth Proportional to 130,755.69, 180,382.86 and 77,014.98

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Solution

The fourth proportional to 130,755.69, 180,382.86 and 77,014.98 is: 106,245.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,755.69 : 180,382.86 = 77,014.98 : x
  2. Step 2: Convert to fraction form
    130,755.69/180,382.86 = 77,014.98/x
  3. Step 3: Cross multiply
    130,755.69x = 180,382.86 × 77,014.98
  4. Step 4: Simplify right side
    130,755.69x = 13,892,182,355.24
  5. Step 5: Solve for x
    x = 13,892,182,355.24/130,755.69
  6. Step 6: Final answer
    x = 106,245.34

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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.