Home / 105,613.76-145,746.96-57,868.92

Finding the Fourth Proportional to 105,613.76, 145,746.96 and 57,868.92

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Solution

The fourth proportional to 105,613.76, 145,746.96 and 57,868.92 is: 79,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,613.76 : 145,746.96 = 57,868.92 : x
  2. Step 2: Convert to fraction form
    105,613.76/145,746.96 = 57,868.92/x
  3. Step 3: Cross multiply
    105,613.76x = 145,746.96 × 57,868.92
  4. Step 4: Simplify right side
    105,613.76x = 8,434,219,168.48
  5. Step 5: Solve for x
    x = 8,434,219,168.48/105,613.76
  6. Step 6: Final answer
    x = 79,859.09

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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.