Home / 165,869.12-228,899.40-90,417.68

Finding the Fourth Proportional to 165,869.12, 228,899.40 and 90,417.68

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Solution

The fourth proportional to 165,869.12, 228,899.40 and 90,417.68 is: 124,776.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,869.12 : 228,899.40 = 90,417.68 : x
  2. Step 2: Convert to fraction form
    165,869.12/228,899.40 = 90,417.68/x
  3. Step 3: Cross multiply
    165,869.12x = 228,899.40 × 90,417.68
  4. Step 4: Simplify right side
    165,869.12x = 20,696,552,701.39
  5. Step 5: Solve for x
    x = 20,696,552,701.39/165,869.12
  6. Step 6: Final answer
    x = 124,776.41

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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.