Home / 144,386.45-216,399.25-69,486.48

Finding the Fourth Proportional to 144,386.45, 216,399.25 and 69,486.48

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Solution

The fourth proportional to 144,386.45, 216,399.25 and 69,486.48 is: 104,142.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,386.45 : 216,399.25 = 69,486.48 : x
  2. Step 2: Convert to fraction form
    144,386.45/216,399.25 = 69,486.48/x
  3. Step 3: Cross multiply
    144,386.45x = 216,399.25 × 69,486.48
  4. Step 4: Simplify right side
    144,386.45x = 15,036,822,461.76
  5. Step 5: Solve for x
    x = 15,036,822,461.76/144,386.45
  6. Step 6: Final answer
    x = 104,142.89

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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.