Home / 113,278.40-156,308.64-65,533.76

Finding the Fourth Proportional to 113,278.40, 156,308.64 and 65,533.76

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Solution

The fourth proportional to 113,278.40, 156,308.64 and 65,533.76 is: 90,427.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,278.40 : 156,308.64 = 65,533.76 : x
  2. Step 2: Convert to fraction form
    113,278.40/156,308.64 = 65,533.76/x
  3. Step 3: Cross multiply
    113,278.40x = 156,308.64 × 65,533.76
  4. Step 4: Simplify right side
    113,278.40x = 10,243,492,899.69
  5. Step 5: Solve for x
    x = 10,243,492,899.69/113,278.40
  6. Step 6: Final answer
    x = 90,427.59

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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.