Home / 86,360.77-129,312.73-67,678.93

Finding the Fourth Proportional to 86,360.77, 129,312.73 and 67,678.93

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Solution

The fourth proportional to 86,360.77, 129,312.73 and 67,678.93 is: 101,339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,360.77 : 129,312.73 = 67,678.93 : x
  2. Step 2: Convert to fraction form
    86,360.77/129,312.73 = 67,678.93/x
  3. Step 3: Cross multiply
    86,360.77x = 129,312.73 × 67,678.93
  4. Step 4: Simplify right side
    86,360.77x = 8,751,747,201.78
  5. Step 5: Solve for x
    x = 8,751,747,201.78/86,360.77
  6. Step 6: Final answer
    x = 101,339.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.