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Finding the Fourth Proportional to 98,656,596.80, 147,772,318.80 and 81,650,484.80

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Solution

The fourth proportional to 98,656,596.80, 147,772,318.80 and 81,650,484.80 is: 122,299,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,656,596.80 : 147,772,318.80 = 81,650,484.80 : x
  2. Step 2: Convert to fraction form
    98,656,596.80/147,772,318.80 = 81,650,484.80/x
  3. Step 3: Cross multiply
    98,656,596.80x = 147,772,318.80 × 81,650,484.80
  4. Step 4: Simplify right side
    98,656,596.80x = 12,065,681,470,040,154
  5. Step 5: Solve for x
    x = 12,065,681,470,040,154/98,656,596.80
  6. Step 6: Final answer
    x = 122,299,794.05

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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.