Home / 87,120,175.20-130,680,262.80-56,663,138.40

Finding the Fourth Proportional to 87,120,175.20, 130,680,262.80 and 56,663,138.40

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Solution

The fourth proportional to 87,120,175.20, 130,680,262.80 and 56,663,138.40 is: 84,994,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120,175.20 : 130,680,262.80 = 56,663,138.40 : x
  2. Step 2: Convert to fraction form
    87,120,175.20/130,680,262.80 = 56,663,138.40/x
  3. Step 3: Cross multiply
    87,120,175.20x = 130,680,262.80 × 56,663,138.40
  4. Step 4: Simplify right side
    87,120,175.20x = 7,404,753,817,184,771
  5. Step 5: Solve for x
    x = 7,404,753,817,184,771/87,120,175.20
  6. Step 6: Final answer
    x = 84,994,707.60

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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.