Home / 128,848.06-177,810.15-72,258.94

Finding the Fourth Proportional to 128,848.06, 177,810.15 and 72,258.94

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Solution

The fourth proportional to 128,848.06, 177,810.15 and 72,258.94 is: 99,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,848.06 : 177,810.15 = 72,258.94 : x
  2. Step 2: Convert to fraction form
    128,848.06/177,810.15 = 72,258.94/x
  3. Step 3: Cross multiply
    128,848.06x = 177,810.15 × 72,258.94
  4. Step 4: Simplify right side
    128,848.06x = 12,848,372,960.24
  5. Step 5: Solve for x
    x = 12,848,372,960.24/128,848.06
  6. Step 6: Final answer
    x = 99,717.24

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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.