Home / 102,765.65-141,724.49-85,595.06

Finding the Fourth Proportional to 102,765.65, 141,724.49 and 85,595.06

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Solution

The fourth proportional to 102,765.65, 141,724.49 and 85,595.06 is: 118,044.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,765.65 : 141,724.49 = 85,595.06 : x
  2. Step 2: Convert to fraction form
    102,765.65/141,724.49 = 85,595.06/x
  3. Step 3: Cross multiply
    102,765.65x = 141,724.49 × 85,595.06
  4. Step 4: Simplify right side
    102,765.65x = 12,130,916,151.36
  5. Step 5: Solve for x
    x = 12,130,916,151.36/102,765.65
  6. Step 6: Final answer
    x = 118,044.47

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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.