Home / 156,881.40-216,497.71-85,261.47

Finding the Fourth Proportional to 156,881.40, 216,497.71 and 85,261.47

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Solution

The fourth proportional to 156,881.40, 216,497.71 and 85,261.47 is: 117,661.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,881.40 : 216,497.71 = 85,261.47 : x
  2. Step 2: Convert to fraction form
    156,881.40/216,497.71 = 85,261.47/x
  3. Step 3: Cross multiply
    156,881.40x = 216,497.71 × 85,261.47
  4. Step 4: Simplify right side
    156,881.40x = 18,458,913,006.23
  5. Step 5: Solve for x
    x = 18,458,913,006.23/156,881.40
  6. Step 6: Final answer
    x = 117,661.58

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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.