Home / 128,185.63-176,895.11-70,824.77

Finding the Fourth Proportional to 128,185.63, 176,895.11 and 70,824.77

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Solution

The fourth proportional to 128,185.63, 176,895.11 and 70,824.77 is: 97,737.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.63 : 176,895.11 = 70,824.77 : x
  2. Step 2: Convert to fraction form
    128,185.63/176,895.11 = 70,824.77/x
  3. Step 3: Cross multiply
    128,185.63x = 176,895.11 × 70,824.77
  4. Step 4: Simplify right side
    128,185.63x = 12,528,555,435.82
  5. Step 5: Solve for x
    x = 12,528,555,435.82/128,185.63
  6. Step 6: Final answer
    x = 97,737.60

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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.