Home / 156,740.39-216,299.79-85,120.92

Finding the Fourth Proportional to 156,740.39, 216,299.79 and 85,120.92

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Solution

The fourth proportional to 156,740.39, 216,299.79 and 85,120.92 is: 117,465.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,740.39 : 216,299.79 = 85,120.92 : x
  2. Step 2: Convert to fraction form
    156,740.39/216,299.79 = 85,120.92/x
  3. Step 3: Cross multiply
    156,740.39x = 216,299.79 × 85,120.92
  4. Step 4: Simplify right side
    156,740.39x = 18,411,637,120.61
  5. Step 5: Solve for x
    x = 18,411,637,120.61/156,740.39
  6. Step 6: Final answer
    x = 117,465.81

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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.