Home / 142,247.16-196,285.20-78,569.04

Finding the Fourth Proportional to 142,247.16, 196,285.20 and 78,569.04

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Solution

The fourth proportional to 142,247.16, 196,285.20 and 78,569.04 is: 108,416.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,247.16 : 196,285.20 = 78,569.04 : x
  2. Step 2: Convert to fraction form
    142,247.16/196,285.20 = 78,569.04/x
  3. Step 3: Cross multiply
    142,247.16x = 196,285.20 × 78,569.04
  4. Step 4: Simplify right side
    142,247.16x = 15,421,939,730.21
  5. Step 5: Solve for x
    x = 15,421,939,730.21/142,247.16
  6. Step 6: Final answer
    x = 108,416.50

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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.