Home / 128,588.16-177,407.52-74,852.64

Finding the Fourth Proportional to 128,588.16, 177,407.52 and 74,852.64

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Solution

The fourth proportional to 128,588.16, 177,407.52 and 74,852.64 is: 103,270.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,588.16 : 177,407.52 = 74,852.64 : x
  2. Step 2: Convert to fraction form
    128,588.16/177,407.52 = 74,852.64/x
  3. Step 3: Cross multiply
    128,588.16x = 177,407.52 × 74,852.64
  4. Step 4: Simplify right side
    128,588.16x = 13,279,421,227.85
  5. Step 5: Solve for x
    x = 13,279,421,227.85/128,588.16
  6. Step 6: Final answer
    x = 103,270.95

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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.