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Finding the Fourth Proportional to 152,492.96, 210,440.08 and 85,424.80

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Solution

The fourth proportional to 152,492.96, 210,440.08 and 85,424.80 is: 117,886.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,492.96 : 210,440.08 = 85,424.80 : x
  2. Step 2: Convert to fraction form
    152,492.96/210,440.08 = 85,424.80/x
  3. Step 3: Cross multiply
    152,492.96x = 210,440.08 × 85,424.80
  4. Step 4: Simplify right side
    152,492.96x = 17,976,801,745.98
  5. Step 5: Solve for x
    x = 17,976,801,745.98/152,492.96
  6. Step 6: Final answer
    x = 117,886.11

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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.