Home / 191,221.51-286,821.33-72,904.81

Finding the Fourth Proportional to 191,221.51, 286,821.33 and 72,904.81

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Solution

The fourth proportional to 191,221.51, 286,821.33 and 72,904.81 is: 109,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,221.51 : 286,821.33 = 72,904.81 : x
  2. Step 2: Convert to fraction form
    191,221.51/286,821.33 = 72,904.81/x
  3. Step 3: Cross multiply
    191,221.51x = 286,821.33 × 72,904.81
  4. Step 4: Simplify right side
    191,221.51x = 20,910,654,567.60
  5. Step 5: Solve for x
    x = 20,910,654,567.60/191,221.51
  6. Step 6: Final answer
    x = 109,353.05

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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.