Home / 99,967.77-137,970.54-57,518.10

Finding the Fourth Proportional to 99,967.77, 137,970.54 and 57,518.10

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Solution

The fourth proportional to 99,967.77, 137,970.54 and 57,518.10 is: 79,383.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,967.77 : 137,970.54 = 57,518.10 : x
  2. Step 2: Convert to fraction form
    99,967.77/137,970.54 = 57,518.10/x
  3. Step 3: Cross multiply
    99,967.77x = 137,970.54 × 57,518.10
  4. Step 4: Simplify right side
    99,967.77x = 7,935,803,316.77
  5. Step 5: Solve for x
    x = 7,935,803,316.77/99,967.77
  6. Step 6: Final answer
    x = 79,383.62

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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.