Home / 100,605.08-138,826.86-58,166.34

Finding the Fourth Proportional to 100,605.08, 138,826.86 and 58,166.34

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Solution

The fourth proportional to 100,605.08, 138,826.86 and 58,166.34 is: 80,264.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,605.08 : 138,826.86 = 58,166.34 : x
  2. Step 2: Convert to fraction form
    100,605.08/138,826.86 = 58,166.34/x
  3. Step 3: Cross multiply
    100,605.08x = 138,826.86 × 58,166.34
  4. Step 4: Simplify right side
    100,605.08x = 8,075,050,339.89
  5. Step 5: Solve for x
    x = 8,075,050,339.89/100,605.08
  6. Step 6: Final answer
    x = 80,264.84

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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.