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Finding the Fourth Proportional to 159,368.58, 219,926.88 and 87,746.76

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Solution

The fourth proportional to 159,368.58, 219,926.88 and 87,746.76 is: 121,089.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,368.58 : 219,926.88 = 87,746.76 : x
  2. Step 2: Convert to fraction form
    159,368.58/219,926.88 = 87,746.76/x
  3. Step 3: Cross multiply
    159,368.58x = 219,926.88 × 87,746.76
  4. Step 4: Simplify right side
    159,368.58x = 19,297,871,156.91
  5. Step 5: Solve for x
    x = 19,297,871,156.91/159,368.58
  6. Step 6: Final answer
    x = 121,089.56

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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.