Home / 112,390.36-155,105.94-64,642.66

Finding the Fourth Proportional to 112,390.36, 155,105.94 and 64,642.66

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Solution

The fourth proportional to 112,390.36, 155,105.94 and 64,642.66 is: 89,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,390.36 : 155,105.94 = 64,642.66 : x
  2. Step 2: Convert to fraction form
    112,390.36/155,105.94 = 64,642.66/x
  3. Step 3: Cross multiply
    112,390.36x = 155,105.94 × 64,642.66
  4. Step 4: Simplify right side
    112,390.36x = 10,026,460,543.40
  5. Step 5: Solve for x
    x = 10,026,460,543.40/112,390.36
  6. Step 6: Final answer
    x = 89,211.04

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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.