Home / 99,400.16-137,175.36-56,972

Finding the Fourth Proportional to 99,400.16, 137,175.36 and 56,972

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Solution

The fourth proportional to 99,400.16, 137,175.36 and 56,972 is: 78,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,400.16 : 137,175.36 = 56,972 : x
  2. Step 2: Convert to fraction form
    99,400.16/137,175.36 = 56,972/x
  3. Step 3: Cross multiply
    99,400.16x = 137,175.36 × 56,972
  4. Step 4: Simplify right side
    99,400.16x = 7,815,154,609.92
  5. Step 5: Solve for x
    x = 7,815,154,609.92/99,400.16
  6. Step 6: Final answer
    x = 78,623.16

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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.