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Finding the Fourth Proportional to 99,341.99, 137,142.75 and 76,630.00

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Solution

The fourth proportional to 99,341.99, 137,142.75 and 76,630.00 is: 105,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,341.99 : 137,142.75 = 76,630.00 : x
  2. Step 2: Convert to fraction form
    99,341.99/137,142.75 = 76,630.00/x
  3. Step 3: Cross multiply
    99,341.99x = 137,142.75 × 76,630.00
  4. Step 4: Simplify right side
    99,341.99x = 10,509,249,134.15
  5. Step 5: Solve for x
    x = 10,509,249,134.15/99,341.99
  6. Step 6: Final answer
    x = 105,788.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.