Home / 156,890.57-216,510.44-85,270.77

Finding the Fourth Proportional to 156,890.57, 216,510.44 and 85,270.77

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Solution

The fourth proportional to 156,890.57, 216,510.44 and 85,270.77 is: 117,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,890.57 : 216,510.44 = 85,270.77 : x
  2. Step 2: Convert to fraction form
    156,890.57/216,510.44 = 85,270.77/x
  3. Step 3: Cross multiply
    156,890.57x = 216,510.44 × 85,270.77
  4. Step 4: Simplify right side
    156,890.57x = 18,462,011,505.49
  5. Step 5: Solve for x
    x = 18,462,011,505.49/156,890.57
  6. Step 6: Final answer
    x = 117,674.45

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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.