Home / 142,981.18-214,332.32-68,081.20

Finding the Fourth Proportional to 142,981.18, 214,332.32 and 68,081.20

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Solution

The fourth proportional to 142,981.18, 214,332.32 and 68,081.20 is: 102,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,981.18 : 214,332.32 = 68,081.20 : x
  2. Step 2: Convert to fraction form
    142,981.18/214,332.32 = 68,081.20/x
  3. Step 3: Cross multiply
    142,981.18x = 214,332.32 × 68,081.20
  4. Step 4: Simplify right side
    142,981.18x = 14,592,001,203.98
  5. Step 5: Solve for x
    x = 14,592,001,203.98/142,981.18
  6. Step 6: Final answer
    x = 102,055.40

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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.