Home / 112,862.34-155,749.05-61,878.24

Finding the Fourth Proportional to 112,862.34, 155,749.05 and 61,878.24

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Solution

The fourth proportional to 112,862.34, 155,749.05 and 61,878.24 is: 85,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,862.34 : 155,749.05 = 61,878.24 : x
  2. Step 2: Convert to fraction form
    112,862.34/155,749.05 = 61,878.24/x
  3. Step 3: Cross multiply
    112,862.34x = 155,749.05 × 61,878.24
  4. Step 4: Simplify right side
    112,862.34x = 9,637,477,095.67
  5. Step 5: Solve for x
    x = 9,637,477,095.67/112,862.34
  6. Step 6: Final answer
    x = 85,391.43

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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.