Home / 102,438.72-153,563.44-64,885.22

Finding the Fourth Proportional to 102,438.72, 153,563.44 and 64,885.22

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Solution

The fourth proportional to 102,438.72, 153,563.44 and 64,885.22 is: 97,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,438.72 : 153,563.44 = 64,885.22 : x
  2. Step 2: Convert to fraction form
    102,438.72/153,563.44 = 64,885.22/x
  3. Step 3: Cross multiply
    102,438.72x = 153,563.44 × 64,885.22
  4. Step 4: Simplify right side
    102,438.72x = 9,963,997,588.36
  5. Step 5: Solve for x
    x = 9,963,997,588.36/102,438.72
  6. Step 6: Final answer
    x = 97,267.88

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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.