Home / 92,638.13-139,143.15-55,271.07

Finding the Fourth Proportional to 92,638.13, 139,143.15 and 55,271.07

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Solution

The fourth proportional to 92,638.13, 139,143.15 and 55,271.07 is: 83,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,638.13 : 139,143.15 = 55,271.07 : x
  2. Step 2: Convert to fraction form
    92,638.13/139,143.15 = 55,271.07/x
  3. Step 3: Cross multiply
    92,638.13x = 139,143.15 × 55,271.07
  4. Step 4: Simplify right side
    92,638.13x = 7,690,590,783.67
  5. Step 5: Solve for x
    x = 7,690,590,783.67/92,638.13
  6. Step 6: Final answer
    x = 83,017.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.