Home / 156,877.47-216,490.82-85,257.51

Finding the Fourth Proportional to 156,877.47, 216,490.82 and 85,257.51

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Solution

The fourth proportional to 156,877.47, 216,490.82 and 85,257.51 is: 117,655.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,877.47 : 216,490.82 = 85,257.51 : x
  2. Step 2: Convert to fraction form
    156,877.47/216,490.82 = 85,257.51/x
  3. Step 3: Cross multiply
    156,877.47x = 216,490.82 × 85,257.51
  4. Step 4: Simplify right side
    156,877.47x = 18,457,467,824.77
  5. Step 5: Solve for x
    x = 18,457,467,824.77/156,877.47
  6. Step 6: Final answer
    x = 117,655.31

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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.