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Finding the Fourth Proportional to 159,051.42, 219,484.35 and 87,424.74

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Solution

The fourth proportional to 159,051.42, 219,484.35 and 87,424.74 is: 120,642.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,051.42 : 219,484.35 = 87,424.74 : x
  2. Step 2: Convert to fraction form
    159,051.42/219,484.35 = 87,424.74/x
  3. Step 3: Cross multiply
    159,051.42x = 219,484.35 × 87,424.74
  4. Step 4: Simplify right side
    159,051.42x = 19,188,362,232.82
  5. Step 5: Solve for x
    x = 19,188,362,232.82/159,051.42
  6. Step 6: Final answer
    x = 120,642.51

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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.