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Finding the Fourth Proportional to 100,943.70, 151,415.55 and 98,870.10

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Solution

The fourth proportional to 100,943.70, 151,415.55 and 98,870.10 is: 148,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,943.70 : 151,415.55 = 98,870.10 : x
  2. Step 2: Convert to fraction form
    100,943.70/151,415.55 = 98,870.10/x
  3. Step 3: Cross multiply
    100,943.70x = 151,415.55 × 98,870.10
  4. Step 4: Simplify right side
    100,943.70x = 14,970,470,570.06
  5. Step 5: Solve for x
    x = 14,970,470,570.06/100,943.70
  6. Step 6: Final answer
    x = 148,305.15

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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.