Home / 163,390.10-245,085.15-69,905.30

Finding the Fourth Proportional to 163,390.10, 245,085.15 and 69,905.30

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Solution

The fourth proportional to 163,390.10, 245,085.15 and 69,905.30 is: 104,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,390.10 : 245,085.15 = 69,905.30 : x
  2. Step 2: Convert to fraction form
    163,390.10/245,085.15 = 69,905.30/x
  3. Step 3: Cross multiply
    163,390.10x = 245,085.15 × 69,905.30
  4. Step 4: Simplify right side
    163,390.10x = 17,132,750,936.30
  5. Step 5: Solve for x
    x = 17,132,750,936.30/163,390.10
  6. Step 6: Final answer
    x = 104,857.95

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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.