Home / 92,931.13-128,237-51,539.46

Finding the Fourth Proportional to 92,931.13, 128,237 and 51,539.46

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Solution

The fourth proportional to 92,931.13, 128,237 and 51,539.46 is: 71,120.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,931.13 : 128,237 = 51,539.46 : x
  2. Step 2: Convert to fraction form
    92,931.13/128,237 = 51,539.46/x
  3. Step 3: Cross multiply
    92,931.13x = 128,237 × 51,539.46
  4. Step 4: Simplify right side
    92,931.13x = 6,609,265,732.02
  5. Step 5: Solve for x
    x = 6,609,265,732.02/92,931.13
  6. Step 6: Final answer
    x = 71,120.04

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1.5x scale

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.