Home / 128,935.01-177,927.50-71,570.98

Finding the Fourth Proportional to 128,935.01, 177,927.50 and 71,570.98

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Solution

The fourth proportional to 128,935.01, 177,927.50 and 71,570.98 is: 98,766.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,935.01 : 177,927.50 = 71,570.98 : x
  2. Step 2: Convert to fraction form
    128,935.01/177,927.50 = 71,570.98/x
  3. Step 3: Cross multiply
    128,935.01x = 177,927.50 × 71,570.98
  4. Step 4: Simplify right side
    128,935.01x = 12,734,445,543.95
  5. Step 5: Solve for x
    x = 12,734,445,543.95/128,935.01
  6. Step 6: Final answer
    x = 98,766.39

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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.