Home / 158,748.60-219,066.18-87,129.84

Finding the Fourth Proportional to 158,748.60, 219,066.18 and 87,129.84

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Solution

The fourth proportional to 158,748.60, 219,066.18 and 87,129.84 is: 120,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,748.60 : 219,066.18 = 87,129.84 : x
  2. Step 2: Convert to fraction form
    158,748.60/219,066.18 = 87,129.84/x
  3. Step 3: Cross multiply
    158,748.60x = 219,066.18 × 87,129.84
  4. Step 4: Simplify right side
    158,748.60x = 19,087,201,212.81
  5. Step 5: Solve for x
    x = 19,087,201,212.81/158,748.60
  6. Step 6: Final answer
    x = 120,235.40

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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.