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Finding the Fourth Proportional to 139,237.98, 192,148.58 and 75,575.76

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Solution

The fourth proportional to 139,237.98, 192,148.58 and 75,575.76 is: 104,294.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,237.98 : 192,148.58 = 75,575.76 : x
  2. Step 2: Convert to fraction form
    139,237.98/192,148.58 = 75,575.76/x
  3. Step 3: Cross multiply
    139,237.98x = 192,148.58 × 75,575.76
  4. Step 4: Simplify right side
    139,237.98x = 14,521,774,966.42
  5. Step 5: Solve for x
    x = 14,521,774,966.42/139,237.98
  6. Step 6: Final answer
    x = 104,294.64

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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.