Home / 129,907.06-179,270.02-72,547.36

Finding the Fourth Proportional to 129,907.06, 179,270.02 and 72,547.36

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Solution

The fourth proportional to 129,907.06, 179,270.02 and 72,547.36 is: 100,114.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907.06 : 179,270.02 = 72,547.36 : x
  2. Step 2: Convert to fraction form
    129,907.06/179,270.02 = 72,547.36/x
  3. Step 3: Cross multiply
    129,907.06x = 179,270.02 × 72,547.36
  4. Step 4: Simplify right side
    129,907.06x = 13,005,566,678.15
  5. Step 5: Solve for x
    x = 13,005,566,678.15/129,907.06
  6. Step 6: Final answer
    x = 100,114.39

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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.