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Finding the Fourth Proportional to 98,912.61, 148,368.92 and 65,697.55

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Solution

The fourth proportional to 98,912.61, 148,368.92 and 65,697.55 is: 98,546.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,912.61 : 148,368.92 = 65,697.55 : x
  2. Step 2: Convert to fraction form
    98,912.61/148,368.92 = 65,697.55/x
  3. Step 3: Cross multiply
    98,912.61x = 148,368.92 × 65,697.55
  4. Step 4: Simplify right side
    98,912.61x = 9,747,473,840.74
  5. Step 5: Solve for x
    x = 9,747,473,840.74/98,912.61
  6. Step 6: Final answer
    x = 98,546.32

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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.