Home / 98,815.20-148,222.80-84,818.40

Finding the Fourth Proportional to 98,815.20, 148,222.80 and 84,818.40

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Solution

The fourth proportional to 98,815.20, 148,222.80 and 84,818.40 is: 127,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,815.20 : 148,222.80 = 84,818.40 : x
  2. Step 2: Convert to fraction form
    98,815.20/148,222.80 = 84,818.40/x
  3. Step 3: Cross multiply
    98,815.20x = 148,222.80 × 84,818.40
  4. Step 4: Simplify right side
    98,815.20x = 12,572,020,739.52
  5. Step 5: Solve for x
    x = 12,572,020,739.52/98,815.20
  6. Step 6: Final answer
    x = 127,227.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.