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Finding the Fourth Proportional to 93,615.21, 129,114.63 and 70,721.37

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Solution

The fourth proportional to 93,615.21, 129,114.63 and 70,721.37 is: 97,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,615.21 : 129,114.63 = 70,721.37 : x
  2. Step 2: Convert to fraction form
    93,615.21/129,114.63 = 70,721.37/x
  3. Step 3: Cross multiply
    93,615.21x = 129,114.63 × 70,721.37
  4. Step 4: Simplify right side
    93,615.21x = 9,131,163,520.64
  5. Step 5: Solve for x
    x = 9,131,163,520.64/93,615.21
  6. Step 6: Final answer
    x = 97,539.32

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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.