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Finding the Fourth Proportional to 88,703.20, 133,054.80 and 79,955.20

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Solution

The fourth proportional to 88,703.20, 133,054.80 and 79,955.20 is: 119,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,703.20 : 133,054.80 = 79,955.20 : x
  2. Step 2: Convert to fraction form
    88,703.20/133,054.80 = 79,955.20/x
  3. Step 3: Cross multiply
    88,703.20x = 133,054.80 × 79,955.20
  4. Step 4: Simplify right side
    88,703.20x = 10,638,423,144.96
  5. Step 5: Solve for x
    x = 10,638,423,144.96/88,703.20
  6. Step 6: Final answer
    x = 119,932.80

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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.