Home / 94,902.36-130,985.28-78,971.28

Finding the Fourth Proportional to 94,902.36, 130,985.28 and 78,971.28

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Solution

The fourth proportional to 94,902.36, 130,985.28 and 78,971.28 is: 108,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,902.36 : 130,985.28 = 78,971.28 : x
  2. Step 2: Convert to fraction form
    94,902.36/130,985.28 = 78,971.28/x
  3. Step 3: Cross multiply
    94,902.36x = 130,985.28 × 78,971.28
  4. Step 4: Simplify right side
    94,902.36x = 10,344,075,222.76
  5. Step 5: Solve for x
    x = 10,344,075,222.76/94,902.36
  6. Step 6: Final answer
    x = 108,997.03

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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.