Home / 156,928.51-216,562.73-85,308.64

Finding the Fourth Proportional to 156,928.51, 216,562.73 and 85,308.64

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Solution

The fourth proportional to 156,928.51, 216,562.73 and 85,308.64 is: 117,726.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,928.51 : 216,562.73 = 85,308.64 : x
  2. Step 2: Convert to fraction form
    156,928.51/216,562.73 = 85,308.64/x
  3. Step 3: Cross multiply
    156,928.51x = 216,562.73 × 85,308.64
  4. Step 4: Simplify right side
    156,928.51x = 18,474,671,970.99
  5. Step 5: Solve for x
    x = 18,474,671,970.99/156,928.51
  6. Step 6: Final answer
    x = 117,726.68

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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.