Home / 100,111.87-138,154.77-64,302.19

Finding the Fourth Proportional to 100,111.87, 138,154.77 and 64,302.19

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Solution

The fourth proportional to 100,111.87, 138,154.77 and 64,302.19 is: 88,737.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,111.87 : 138,154.77 = 64,302.19 : x
  2. Step 2: Convert to fraction form
    100,111.87/138,154.77 = 64,302.19/x
  3. Step 3: Cross multiply
    100,111.87x = 138,154.77 × 64,302.19
  4. Step 4: Simplify right side
    100,111.87x = 8,883,654,269.95
  5. Step 5: Solve for x
    x = 8,883,654,269.95/100,111.87
  6. Step 6: Final answer
    x = 88,737.27

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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.