Home / 112,420.80-168,660.36-59,787

Finding the Fourth Proportional to 112,420.80, 168,660.36 and 59,787

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Solution

The fourth proportional to 112,420.80, 168,660.36 and 59,787 is: 89,696.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,420.80 : 168,660.36 = 59,787 : x
  2. Step 2: Convert to fraction form
    112,420.80/168,660.36 = 59,787/x
  3. Step 3: Cross multiply
    112,420.80x = 168,660.36 × 59,787
  4. Step 4: Simplify right side
    112,420.80x = 10,083,696,943.32
  5. Step 5: Solve for x
    x = 10,083,696,943.32/112,420.80
  6. Step 6: Final answer
    x = 89,696.01

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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.