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Finding the Fourth Proportional to 109,472.40, 164,208.60 and 79,534.80

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Solution

The fourth proportional to 109,472.40, 164,208.60 and 79,534.80 is: 119,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,472.40 : 164,208.60 = 79,534.80 : x
  2. Step 2: Convert to fraction form
    109,472.40/164,208.60 = 79,534.80/x
  3. Step 3: Cross multiply
    109,472.40x = 164,208.60 × 79,534.80
  4. Step 4: Simplify right side
    109,472.40x = 13,060,298,159.28
  5. Step 5: Solve for x
    x = 13,060,298,159.28/109,472.40
  6. Step 6: Final answer
    x = 119,302.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.