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Finding the Fourth Proportional to 147,381.32, 220,860.76 and 84,070.44

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Solution

The fourth proportional to 147,381.32, 220,860.76 and 84,070.44 is: 125,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,381.32 : 220,860.76 = 84,070.44 : x
  2. Step 2: Convert to fraction form
    147,381.32/220,860.76 = 84,070.44/x
  3. Step 3: Cross multiply
    147,381.32x = 220,860.76 × 84,070.44
  4. Step 4: Simplify right side
    147,381.32x = 18,567,861,271.93
  5. Step 5: Solve for x
    x = 18,567,861,271.93/147,381.32
  6. Step 6: Final answer
    x = 125,985.17

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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.