Home / 112,736.40-169,186.61-90,814.45

Finding the Fourth Proportional to 112,736.40, 169,186.61 and 90,814.45

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Solution

The fourth proportional to 112,736.40, 169,186.61 and 90,814.45 is: 136,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,736.40 : 169,186.61 = 90,814.45 : x
  2. Step 2: Convert to fraction form
    112,736.40/169,186.61 = 90,814.45/x
  3. Step 3: Cross multiply
    112,736.40x = 169,186.61 × 90,814.45
  4. Step 4: Simplify right side
    112,736.40x = 15,364,588,934.51
  5. Step 5: Solve for x
    x = 15,364,588,934.51/112,736.40
  6. Step 6: Final answer
    x = 136,287.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.