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Finding the Fourth Proportional to 163,638.63, 245,457.95 and 45,307.35

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Solution

The fourth proportional to 163,638.63, 245,457.95 and 45,307.35 is: 67,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,638.63 : 245,457.95 = 45,307.35 : x
  2. Step 2: Convert to fraction form
    163,638.63/245,457.95 = 45,307.35/x
  3. Step 3: Cross multiply
    163,638.63x = 245,457.95 × 45,307.35
  4. Step 4: Simplify right side
    163,638.63x = 11,121,049,024.40
  5. Step 5: Solve for x
    x = 11,121,049,024.40/163,638.63
  6. Step 6: Final answer
    x = 67,961.03

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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.