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Finding the Fourth Proportional to 122,332.32, 168,854.40 and 79,897.32

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Solution

The fourth proportional to 122,332.32, 168,854.40 and 79,897.32 is: 110,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,332.32 : 168,854.40 = 79,897.32 : x
  2. Step 2: Convert to fraction form
    122,332.32/168,854.40 = 79,897.32/x
  3. Step 3: Cross multiply
    122,332.32x = 168,854.40 × 79,897.32
  4. Step 4: Simplify right side
    122,332.32x = 13,491,014,030.21
  5. Step 5: Solve for x
    x = 13,491,014,030.21/122,332.32
  6. Step 6: Final answer
    x = 110,281.68

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1.5x scale

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.