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Finding the Fourth Proportional to 112,937.66, 155,858.86 and 67,606.88

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Solution

The fourth proportional to 112,937.66, 155,858.86 and 67,606.88 is: 93,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,937.66 : 155,858.86 = 67,606.88 : x
  2. Step 2: Convert to fraction form
    112,937.66/155,858.86 = 67,606.88/x
  3. Step 3: Cross multiply
    112,937.66x = 155,858.86 × 67,606.88
  4. Step 4: Simplify right side
    112,937.66x = 10,537,130,550.17
  5. Step 5: Solve for x
    x = 10,537,130,550.17/112,937.66
  6. Step 6: Final answer
    x = 93,300.41

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1.5x scale

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.