Home / 112,643.10-155,342.10-76,349.82

Finding the Fourth Proportional to 112,643.10, 155,342.10 and 76,349.82

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Solution

The fourth proportional to 112,643.10, 155,342.10 and 76,349.82 is: 105,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,643.10 : 155,342.10 = 76,349.82 : x
  2. Step 2: Convert to fraction form
    112,643.10/155,342.10 = 76,349.82/x
  3. Step 3: Cross multiply
    112,643.10x = 155,342.10 × 76,349.82
  4. Step 4: Simplify right side
    112,643.10x = 11,860,341,373.42
  5. Step 5: Solve for x
    x = 11,860,341,373.42/112,643.10
  6. Step 6: Final answer
    x = 105,291.33

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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.