Home / 112,116.25-154,721.63-61,128.57

Finding the Fourth Proportional to 112,116.25, 154,721.63 and 61,128.57

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Solution

The fourth proportional to 112,116.25, 154,721.63 and 61,128.57 is: 84,358.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,116.25 : 154,721.63 = 61,128.57 : x
  2. Step 2: Convert to fraction form
    112,116.25/154,721.63 = 61,128.57/x
  3. Step 3: Cross multiply
    112,116.25x = 154,721.63 × 61,128.57
  4. Step 4: Simplify right side
    112,116.25x = 9,457,911,445.59
  5. Step 5: Solve for x
    x = 9,457,911,445.59/112,116.25
  6. Step 6: Final answer
    x = 84,358.08

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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.