Home / 151,421.48-208,961.65-87,796.19

Finding the Fourth Proportional to 151,421.48, 208,961.65 and 87,796.19

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Solution

The fourth proportional to 151,421.48, 208,961.65 and 87,796.19 is: 121,158.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,421.48 : 208,961.65 = 87,796.19 : x
  2. Step 2: Convert to fraction form
    151,421.48/208,961.65 = 87,796.19/x
  3. Step 3: Cross multiply
    151,421.48x = 208,961.65 × 87,796.19
  4. Step 4: Simplify right side
    151,421.48x = 18,346,035,681.31
  5. Step 5: Solve for x
    x = 18,346,035,681.31/151,421.48
  6. Step 6: Final answer
    x = 121,158.74

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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.