Home / 111,669.40-154,117.08-63,938.08

Finding the Fourth Proportional to 111,669.40, 154,117.08 and 63,938.08

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Solution

The fourth proportional to 111,669.40, 154,117.08 and 63,938.08 is: 88,242.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,669.40 : 154,117.08 = 63,938.08 : x
  2. Step 2: Convert to fraction form
    111,669.40/154,117.08 = 63,938.08/x
  3. Step 3: Cross multiply
    111,669.40x = 154,117.08 × 63,938.08
  4. Step 4: Simplify right side
    111,669.40x = 9,853,950,190.41
  5. Step 5: Solve for x
    x = 9,853,950,190.41/111,669.40
  6. Step 6: Final answer
    x = 88,242.17

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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.