Home / 128,526.37-177,366.35-71,937.75

Finding the Fourth Proportional to 128,526.37, 177,366.35 and 71,937.75

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Solution

The fourth proportional to 128,526.37, 177,366.35 and 71,937.75 is: 99,274.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,526.37 : 177,366.35 = 71,937.75 : x
  2. Step 2: Convert to fraction form
    128,526.37/177,366.35 = 71,937.75/x
  3. Step 3: Cross multiply
    128,526.37x = 177,366.35 × 71,937.75
  4. Step 4: Simplify right side
    128,526.37x = 12,759,335,341.61
  5. Step 5: Solve for x
    x = 12,759,335,341.61/128,526.37
  6. Step 6: Final answer
    x = 99,274.06

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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.