Home / 112,635.68-155,430.91-61,648.31

Finding the Fourth Proportional to 112,635.68, 155,430.91 and 61,648.31

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Solution

The fourth proportional to 112,635.68, 155,430.91 and 61,648.31 is: 85,071.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,635.68 : 155,430.91 = 61,648.31 : x
  2. Step 2: Convert to fraction form
    112,635.68/155,430.91 = 61,648.31/x
  3. Step 3: Cross multiply
    112,635.68x = 155,430.91 × 61,648.31
  4. Step 4: Simplify right side
    112,635.68x = 9,582,051,837.87
  5. Step 5: Solve for x
    x = 9,582,051,837.87/112,635.68
  6. Step 6: Final answer
    x = 85,071.19

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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.