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Finding the Fourth Proportional to 100,364.66, 138,509.36 and 57,925.92

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Solution

The fourth proportional to 100,364.66, 138,509.36 and 57,925.92 is: 79,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,364.66 : 138,509.36 = 57,925.92 : x
  2. Step 2: Convert to fraction form
    100,364.66/138,509.36 = 57,925.92/x
  3. Step 3: Cross multiply
    100,364.66x = 138,509.36 × 57,925.92
  4. Step 4: Simplify right side
    100,364.66x = 8,023,281,816.98
  5. Step 5: Solve for x
    x = 8,023,281,816.98/100,364.66
  6. Step 6: Final answer
    x = 79,941.31

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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.