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Finding the Fourth Proportional to 112,804.40, 169,066.20 and 72,717.68

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Solution

The fourth proportional to 112,804.40, 169,066.20 and 72,717.68 is: 108,986.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,804.40 : 169,066.20 = 72,717.68 : x
  2. Step 2: Convert to fraction form
    112,804.40/169,066.20 = 72,717.68/x
  3. Step 3: Cross multiply
    112,804.40x = 169,066.20 × 72,717.68
  4. Step 4: Simplify right side
    112,804.40x = 12,294,101,830.42
  5. Step 5: Solve for x
    x = 12,294,101,830.42/112,804.40
  6. Step 6: Final answer
    x = 108,986.01

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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.