Home / 156,747.76-216,312.53-85,128.98

Finding the Fourth Proportional to 156,747.76, 216,312.53 and 85,128.98

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Solution

The fourth proportional to 156,747.76, 216,312.53 and 85,128.98 is: 117,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,747.76 : 216,312.53 = 85,128.98 : x
  2. Step 2: Convert to fraction form
    156,747.76/216,312.53 = 85,128.98/x
  3. Step 3: Cross multiply
    156,747.76x = 216,312.53 × 85,128.98
  4. Step 4: Simplify right side
    156,747.76x = 18,414,463,532.91
  5. Step 5: Solve for x
    x = 18,414,463,532.91/156,747.76
  6. Step 6: Final answer
    x = 117,478.32

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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.