Home / 79,254.08-118,172.56-77,076.80

Finding the Fourth Proportional to 79,254.08, 118,172.56 and 77,076.80

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Solution

The fourth proportional to 79,254.08, 118,172.56 and 77,076.80 is: 114,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,254.08 : 118,172.56 = 77,076.80 : x
  2. Step 2: Convert to fraction form
    79,254.08/118,172.56 = 77,076.80/x
  3. Step 3: Cross multiply
    79,254.08x = 118,172.56 × 77,076.80
  4. Step 4: Simplify right side
    79,254.08x = 9,108,362,772.61
  5. Step 5: Solve for x
    x = 9,108,362,772.61/79,254.08
  6. Step 6: Final answer
    x = 114,926.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.