Home / 156,942.16-216,582.65-85,322.46

Finding the Fourth Proportional to 156,942.16, 216,582.65 and 85,322.46

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Solution

The fourth proportional to 156,942.16, 216,582.65 and 85,322.46 is: 117,746.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,942.16 : 216,582.65 = 85,322.46 : x
  2. Step 2: Convert to fraction form
    156,942.16/216,582.65 = 85,322.46/x
  3. Step 3: Cross multiply
    156,942.16x = 216,582.65 × 85,322.46
  4. Step 4: Simplify right side
    156,942.16x = 18,479,362,981.79
  5. Step 5: Solve for x
    x = 18,479,362,981.79/156,942.16
  6. Step 6: Final answer
    x = 117,746.33

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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.