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Finding the Fourth Proportional to 98,837.70, 148,220.10 and 42,680.40

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Solution

The fourth proportional to 98,837.70, 148,220.10 and 42,680.40 is: 64,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,837.70 : 148,220.10 = 42,680.40 : x
  2. Step 2: Convert to fraction form
    98,837.70/148,220.10 = 42,680.40/x
  3. Step 3: Cross multiply
    98,837.70x = 148,220.10 × 42,680.40
  4. Step 4: Simplify right side
    98,837.70x = 6,326,093,156.04
  5. Step 5: Solve for x
    x = 6,326,093,156.04/98,837.70
  6. Step 6: Final answer
    x = 64,004.86

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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.