Home / 102,600.77-141,647.96-78,210.26

Finding the Fourth Proportional to 102,600.77, 141,647.96 and 78,210.26

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Solution

The fourth proportional to 102,600.77, 141,647.96 and 78,210.26 is: 107,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,600.77 : 141,647.96 = 78,210.26 : x
  2. Step 2: Convert to fraction form
    102,600.77/141,647.96 = 78,210.26/x
  3. Step 3: Cross multiply
    102,600.77x = 141,647.96 × 78,210.26
  4. Step 4: Simplify right side
    102,600.77x = 11,078,323,267.36
  5. Step 5: Solve for x
    x = 11,078,323,267.36/102,600.77
  6. Step 6: Final answer
    x = 107,975.05

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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.