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Finding the Fourth Proportional to 158,871.42, 219,246.38 and 87,252.98

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Solution

The fourth proportional to 158,871.42, 219,246.38 and 87,252.98 is: 120,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,871.42 : 219,246.38 = 87,252.98 : x
  2. Step 2: Convert to fraction form
    158,871.42/219,246.38 = 87,252.98/x
  3. Step 3: Cross multiply
    158,871.42x = 219,246.38 × 87,252.98
  4. Step 4: Simplify right side
    158,871.42x = 19,129,898,803.91
  5. Step 5: Solve for x
    x = 19,129,898,803.91/158,871.42
  6. Step 6: Final answer
    x = 120,411.20

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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.