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Finding the Fourth Proportional to 140,417.84, 210,679.36 and 72,907.74

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Solution

The fourth proportional to 140,417.84, 210,679.36 and 72,907.74 is: 109,388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,417.84 : 210,679.36 = 72,907.74 : x
  2. Step 2: Convert to fraction form
    140,417.84/210,679.36 = 72,907.74/x
  3. Step 3: Cross multiply
    140,417.84x = 210,679.36 × 72,907.74
  4. Step 4: Simplify right side
    140,417.84x = 15,360,156,002.25
  5. Step 5: Solve for x
    x = 15,360,156,002.25/140,417.84
  6. Step 6: Final answer
    x = 109,388.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.