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Finding the Fourth Proportional to 117,075.76, 161,564.53 and 63,360.78

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Solution

The fourth proportional to 117,075.76, 161,564.53 and 63,360.78 is: 87,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,075.76 : 161,564.53 = 63,360.78 : x
  2. Step 2: Convert to fraction form
    117,075.76/161,564.53 = 63,360.78/x
  3. Step 3: Cross multiply
    117,075.76x = 161,564.53 × 63,360.78
  4. Step 4: Simplify right side
    117,075.76x = 10,236,854,482.73
  5. Step 5: Solve for x
    x = 10,236,854,482.73/117,075.76
  6. Step 6: Final answer
    x = 87,437.87

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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.