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Finding the Fourth Proportional to 113,038.70, 169,266.45 and 89,710.70

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Solution

The fourth proportional to 113,038.70, 169,266.45 and 89,710.70 is: 134,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,038.70 : 169,266.45 = 89,710.70 : x
  2. Step 2: Convert to fraction form
    113,038.70/169,266.45 = 89,710.70/x
  3. Step 3: Cross multiply
    113,038.70x = 169,266.45 × 89,710.70
  4. Step 4: Simplify right side
    113,038.70x = 15,185,011,716.02
  5. Step 5: Solve for x
    x = 15,185,011,716.02/113,038.70
  6. Step 6: Final answer
    x = 134,334.63

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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.