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Finding the Fourth Proportional to 84,718.98, 127,277.06 and 79,931.52

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Solution

The fourth proportional to 84,718.98, 127,277.06 and 79,931.52 is: 120,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,718.98 : 127,277.06 = 79,931.52 : x
  2. Step 2: Convert to fraction form
    84,718.98/127,277.06 = 79,931.52/x
  3. Step 3: Cross multiply
    84,718.98x = 127,277.06 × 79,931.52
  4. Step 4: Simplify right side
    84,718.98x = 10,173,448,866.93
  5. Step 5: Solve for x
    x = 10,173,448,866.93/84,718.98
  6. Step 6: Final answer
    x = 120,084.65

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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.