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Finding the Fourth Proportional to 156,942, 216,563.80 and 93,267.52

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Solution

The fourth proportional to 156,942, 216,563.80 and 93,267.52 is: 128,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,942 : 216,563.80 = 93,267.52 : x
  2. Step 2: Convert to fraction form
    156,942/216,563.80 = 93,267.52/x
  3. Step 3: Cross multiply
    156,942x = 216,563.80 × 93,267.52
  4. Step 4: Simplify right side
    156,942x = 20,198,368,547.78
  5. Step 5: Solve for x
    x = 20,198,368,547.78/156,942
  6. Step 6: Final answer
    x = 128,699.57

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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.