Home / 112,864.21-155,749.22-61,875.19

Finding the Fourth Proportional to 112,864.21, 155,749.22 and 61,875.19

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Solution

The fourth proportional to 112,864.21, 155,749.22 and 61,875.19 is: 85,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,864.21 : 155,749.22 = 61,875.19 : x
  2. Step 2: Convert to fraction form
    112,864.21/155,749.22 = 61,875.19/x
  3. Step 3: Cross multiply
    112,864.21x = 155,749.22 × 61,875.19
  4. Step 4: Simplify right side
    112,864.21x = 9,637,012,579.85
  5. Step 5: Solve for x
    x = 9,637,012,579.85/112,864.21
  6. Step 6: Final answer
    x = 85,385.91

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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.