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Finding the Fourth Proportional to 112,409.00, 155,119.59 and 61,420.92

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Solution

The fourth proportional to 112,409.00, 155,119.59 and 61,420.92 is: 84,758.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,409.00 : 155,119.59 = 61,420.92 : x
  2. Step 2: Convert to fraction form
    112,409.00/155,119.59 = 61,420.92/x
  3. Step 3: Cross multiply
    112,409.00x = 155,119.59 × 61,420.92
  4. Step 4: Simplify right side
    112,409.00x = 9,527,587,346.12
  5. Step 5: Solve for x
    x = 9,527,587,346.12/112,409.00
  6. Step 6: Final answer
    x = 84,758.23

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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.