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Finding the Fourth Proportional to 158,186.94, 218,070.95 and 112,786.17

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Solution

The fourth proportional to 158,186.94, 218,070.95 and 112,786.17 is: 155,483.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,186.94 : 218,070.95 = 112,786.17 : x
  2. Step 2: Convert to fraction form
    158,186.94/218,070.95 = 112,786.17/x
  3. Step 3: Cross multiply
    158,186.94x = 218,070.95 × 112,786.17
  4. Step 4: Simplify right side
    158,186.94x = 24,595,386,674.83
  5. Step 5: Solve for x
    x = 24,595,386,674.83/158,186.94
  6. Step 6: Final answer
    x = 155,483.04

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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.