Home / 112,613.74-155,534.51-76,741.47

Finding the Fourth Proportional to 112,613.74, 155,534.51 and 76,741.47

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Solution

The fourth proportional to 112,613.74, 155,534.51 and 76,741.47 is: 105,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,613.74 : 155,534.51 = 76,741.47 : x
  2. Step 2: Convert to fraction form
    112,613.74/155,534.51 = 76,741.47/x
  3. Step 3: Cross multiply
    112,613.74x = 155,534.51 × 76,741.47
  4. Step 4: Simplify right side
    112,613.74x = 11,935,946,933.13
  5. Step 5: Solve for x
    x = 11,935,946,933.13/112,613.74
  6. Step 6: Final answer
    x = 105,990.15

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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.