Home / 112,931.11-170,421.53-109,166.77

Finding the Fourth Proportional to 112,931.11, 170,421.53 and 109,166.77

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Solution

The fourth proportional to 112,931.11, 170,421.53 and 109,166.77 is: 164,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,931.11 : 170,421.53 = 109,166.77 : x
  2. Step 2: Convert to fraction form
    112,931.11/170,421.53 = 109,166.77/x
  3. Step 3: Cross multiply
    112,931.11x = 170,421.53 × 109,166.77
  4. Step 4: Simplify right side
    112,931.11x = 18,604,367,968.56
  5. Step 5: Solve for x
    x = 18,604,367,968.56/112,931.11
  6. Step 6: Final answer
    x = 164,740.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.