Home / 128,292.88-177,038.60-70,148.55

Finding the Fourth Proportional to 128,292.88, 177,038.60 and 70,148.55

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Solution

The fourth proportional to 128,292.88, 177,038.60 and 70,148.55 is: 96,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,292.88 : 177,038.60 = 70,148.55 : x
  2. Step 2: Convert to fraction form
    128,292.88/177,038.60 = 70,148.55/x
  3. Step 3: Cross multiply
    128,292.88x = 177,038.60 × 70,148.55
  4. Step 4: Simplify right side
    128,292.88x = 12,419,001,084.03
  5. Step 5: Solve for x
    x = 12,419,001,084.03/128,292.88
  6. Step 6: Final answer
    x = 96,801.95

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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.