Home / 100,613.04-138,848.76-55,903.92

Finding the Fourth Proportional to 100,613.04, 138,848.76 and 55,903.92

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Solution

The fourth proportional to 100,613.04, 138,848.76 and 55,903.92 is: 77,148.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,613.04 : 138,848.76 = 55,903.92 : x
  2. Step 2: Convert to fraction form
    100,613.04/138,848.76 = 55,903.92/x
  3. Step 3: Cross multiply
    100,613.04x = 138,848.76 × 55,903.92
  4. Step 4: Simplify right side
    100,613.04x = 7,762,189,971.14
  5. Step 5: Solve for x
    x = 7,762,189,971.14/100,613.04
  6. Step 6: Final answer
    x = 77,148.95

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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.