Home / 156,891.15-216,509.81-85,271.18

Finding the Fourth Proportional to 156,891.15, 216,509.81 and 85,271.18

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Solution

The fourth proportional to 156,891.15, 216,509.81 and 85,271.18 is: 117,674.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,891.15 : 216,509.81 = 85,271.18 : x
  2. Step 2: Convert to fraction form
    156,891.15/216,509.81 = 85,271.18/x
  3. Step 3: Cross multiply
    156,891.15x = 216,509.81 × 85,271.18
  4. Step 4: Simplify right side
    156,891.15x = 18,462,045,471.37
  5. Step 5: Solve for x
    x = 18,462,045,471.37/156,891.15
  6. Step 6: Final answer
    x = 117,674.23

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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.