Home / 152,146.06-209,943.27-87,636.28

Finding the Fourth Proportional to 152,146.06, 209,943.27 and 87,636.28

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Solution

The fourth proportional to 152,146.06, 209,943.27 and 87,636.28 is: 120,927.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,146.06 : 209,943.27 = 87,636.28 : x
  2. Step 2: Convert to fraction form
    152,146.06/209,943.27 = 87,636.28/x
  3. Step 3: Cross multiply
    152,146.06x = 209,943.27 × 87,636.28
  4. Step 4: Simplify right side
    152,146.06x = 18,398,646,428.22
  5. Step 5: Solve for x
    x = 18,398,646,428.22/152,146.06
  6. Step 6: Final answer
    x = 120,927.52

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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.