Home / 112,818.52-155,606.76-81,020.08

Finding the Fourth Proportional to 112,818.52, 155,606.76 and 81,020.08

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Solution

The fourth proportional to 112,818.52, 155,606.76 and 81,020.08 is: 111,748.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,818.52 : 155,606.76 = 81,020.08 : x
  2. Step 2: Convert to fraction form
    112,818.52/155,606.76 = 81,020.08/x
  3. Step 3: Cross multiply
    112,818.52x = 155,606.76 × 81,020.08
  4. Step 4: Simplify right side
    112,818.52x = 12,607,272,143.74
  5. Step 5: Solve for x
    x = 12,607,272,143.74/112,818.52
  6. Step 6: Final answer
    x = 111,748.25

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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.