Home / 128,927.37-177,922.84-72,342.93

Finding the Fourth Proportional to 128,927.37, 177,922.84 and 72,342.93

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Solution

The fourth proportional to 128,927.37, 177,922.84 and 72,342.93 is: 99,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927.37 : 177,922.84 = 72,342.93 : x
  2. Step 2: Convert to fraction form
    128,927.37/177,922.84 = 72,342.93/x
  3. Step 3: Cross multiply
    128,927.37x = 177,922.84 × 72,342.93
  4. Step 4: Simplify right side
    128,927.37x = 12,871,459,559.52
  5. Step 5: Solve for x
    x = 12,871,459,559.52/128,927.37
  6. Step 6: Final answer
    x = 99,834.97

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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.