Home / 123,742.40-170,500.73-83,386.07

Finding the Fourth Proportional to 123,742.40, 170,500.73 and 83,386.07

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Solution

The fourth proportional to 123,742.40, 170,500.73 and 83,386.07 is: 114,895.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,742.40 : 170,500.73 = 83,386.07 : x
  2. Step 2: Convert to fraction form
    123,742.40/170,500.73 = 83,386.07/x
  3. Step 3: Cross multiply
    123,742.40x = 170,500.73 × 83,386.07
  4. Step 4: Simplify right side
    123,742.40x = 14,217,385,806.83
  5. Step 5: Solve for x
    x = 14,217,385,806.83/123,742.40
  6. Step 6: Final answer
    x = 114,895.02

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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.