Home / 99,370.81-137,131.61-56,929.51

Finding the Fourth Proportional to 99,370.81, 137,131.61 and 56,929.51

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Solution

The fourth proportional to 99,370.81, 137,131.61 and 56,929.51 is: 78,562.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,370.81 : 137,131.61 = 56,929.51 : x
  2. Step 2: Convert to fraction form
    99,370.81/137,131.61 = 56,929.51/x
  3. Step 3: Cross multiply
    99,370.81x = 137,131.61 × 56,929.51
  4. Step 4: Simplify right side
    99,370.81x = 7,806,835,362.81
  5. Step 5: Solve for x
    x = 7,806,835,362.81/99,370.81
  6. Step 6: Final answer
    x = 78,562.66

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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.