Home / 106,479.18-159,386.46-78,430.86

Finding the Fourth Proportional to 106,479.18, 159,386.46 and 78,430.86

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Solution

The fourth proportional to 106,479.18, 159,386.46 and 78,430.86 is: 117,401.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,479.18 : 159,386.46 = 78,430.86 : x
  2. Step 2: Convert to fraction form
    106,479.18/159,386.46 = 78,430.86/x
  3. Step 3: Cross multiply
    106,479.18x = 159,386.46 × 78,430.86
  4. Step 4: Simplify right side
    106,479.18x = 12,500,817,130.16
  5. Step 5: Solve for x
    x = 12,500,817,130.16/106,479.18
  6. Step 6: Final answer
    x = 117,401.52

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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.