Home / 112,802.56-155,669.45-61,820.21

Finding the Fourth Proportional to 112,802.56, 155,669.45 and 61,820.21

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Solution

The fourth proportional to 112,802.56, 155,669.45 and 61,820.21 is: 85,312.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,802.56 : 155,669.45 = 61,820.21 : x
  2. Step 2: Convert to fraction form
    112,802.56/155,669.45 = 61,820.21/x
  3. Step 3: Cross multiply
    112,802.56x = 155,669.45 × 61,820.21
  4. Step 4: Simplify right side
    112,802.56x = 9,623,518,169.66
  5. Step 5: Solve for x
    x = 9,623,518,169.66/112,802.56
  6. Step 6: Final answer
    x = 85,312.94

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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.