Home / 106,472.16-159,818.98-78,423.86

Finding the Fourth Proportional to 106,472.16, 159,818.98 and 78,423.86

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Solution

The fourth proportional to 106,472.16, 159,818.98 and 78,423.86 is: 117,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,472.16 : 159,818.98 = 78,423.86 : x
  2. Step 2: Convert to fraction form
    106,472.16/159,818.98 = 78,423.86/x
  3. Step 3: Cross multiply
    106,472.16x = 159,818.98 × 78,423.86
  4. Step 4: Simplify right side
    106,472.16x = 12,533,621,312.86
  5. Step 5: Solve for x
    x = 12,533,621,312.86/106,472.16
  6. Step 6: Final answer
    x = 117,717.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.