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Finding the Fourth Proportional to 99,651,799.20, 149,477,698.80 and 83,495,992.80

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Solution

The fourth proportional to 99,651,799.20, 149,477,698.80 and 83,495,992.80 is: 125,243,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651,799.20 : 149,477,698.80 = 83,495,992.80 : x
  2. Step 2: Convert to fraction form
    99,651,799.20/149,477,698.80 = 83,495,992.80/x
  3. Step 3: Cross multiply
    99,651,799.20x = 149,477,698.80 × 83,495,992.80
  4. Step 4: Simplify right side
    99,651,799.20x = 12,480,788,862,765,370
  5. Step 5: Solve for x
    x = 12,480,788,862,765,370/99,651,799.20
  6. Step 6: Final answer
    x = 125,243,989.20

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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.