Home / 138,304.04-190,857.47-77,874.50

Finding the Fourth Proportional to 138,304.04, 190,857.47 and 77,874.50

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Solution

The fourth proportional to 138,304.04, 190,857.47 and 77,874.50 is: 107,465.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,304.04 : 190,857.47 = 77,874.50 : x
  2. Step 2: Convert to fraction form
    138,304.04/190,857.47 = 77,874.50/x
  3. Step 3: Cross multiply
    138,304.04x = 190,857.47 × 77,874.50
  4. Step 4: Simplify right side
    138,304.04x = 14,862,928,703.86
  5. Step 5: Solve for x
    x = 14,862,928,703.86/138,304.04
  6. Step 6: Final answer
    x = 107,465.62

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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.