Home / 117,427.72-162,079.08-72,116.50

Finding the Fourth Proportional to 117,427.72, 162,079.08 and 72,116.50

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Solution

The fourth proportional to 117,427.72, 162,079.08 and 72,116.50 is: 99,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,427.72 : 162,079.08 = 72,116.50 : x
  2. Step 2: Convert to fraction form
    117,427.72/162,079.08 = 72,116.50/x
  3. Step 3: Cross multiply
    117,427.72x = 162,079.08 × 72,116.50
  4. Step 4: Simplify right side
    117,427.72x = 11,688,575,972.82
  5. Step 5: Solve for x
    x = 11,688,575,972.82/117,427.72
  6. Step 6: Final answer
    x = 99,538.47

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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.