Home / 112,937.40-155,881.97-76,700.17

Finding the Fourth Proportional to 112,937.40, 155,881.97 and 76,700.17

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Solution

The fourth proportional to 112,937.40, 155,881.97 and 76,700.17 is: 105,865.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,937.40 : 155,881.97 = 76,700.17 : x
  2. Step 2: Convert to fraction form
    112,937.40/155,881.97 = 76,700.17/x
  3. Step 3: Cross multiply
    112,937.40x = 155,881.97 × 76,700.17
  4. Step 4: Simplify right side
    112,937.40x = 11,956,173,790.69
  5. Step 5: Solve for x
    x = 11,956,173,790.69/112,937.40
  6. Step 6: Final answer
    x = 105,865.50

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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.