Home / 145,971.48-218,968.74-46,139.28

Finding the Fourth Proportional to 145,971.48, 218,968.74 and 46,139.28

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Solution

The fourth proportional to 145,971.48, 218,968.74 and 46,139.28 is: 69,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,971.48 : 218,968.74 = 46,139.28 : x
  2. Step 2: Convert to fraction form
    145,971.48/218,968.74 = 46,139.28/x
  3. Step 3: Cross multiply
    145,971.48x = 218,968.74 × 46,139.28
  4. Step 4: Simplify right side
    145,971.48x = 10,103,060,006.11
  5. Step 5: Solve for x
    x = 10,103,060,006.11/145,971.48
  6. Step 6: Final answer
    x = 69,212.56

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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.