Home / 142,623.18-196,812.16-78,079.92

Finding the Fourth Proportional to 142,623.18, 196,812.16 and 78,079.92

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Solution

The fourth proportional to 142,623.18, 196,812.16 and 78,079.92 is: 107,746.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,623.18 : 196,812.16 = 78,079.92 : x
  2. Step 2: Convert to fraction form
    142,623.18/196,812.16 = 78,079.92/x
  3. Step 3: Cross multiply
    142,623.18x = 196,812.16 × 78,079.92
  4. Step 4: Simplify right side
    142,623.18x = 15,367,077,707.83
  5. Step 5: Solve for x
    x = 15,367,077,707.83/142,623.18
  6. Step 6: Final answer
    x = 107,746.00

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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.