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Finding the Fourth Proportional to 145,953.06, 201,415.13 and 78,885.06

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Solution

The fourth proportional to 145,953.06, 201,415.13 and 78,885.06 is: 108,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,953.06 : 201,415.13 = 78,885.06 : x
  2. Step 2: Convert to fraction form
    145,953.06/201,415.13 = 78,885.06/x
  3. Step 3: Cross multiply
    145,953.06x = 201,415.13 × 78,885.06
  4. Step 4: Simplify right side
    145,953.06x = 15,888,644,220.53
  5. Step 5: Solve for x
    x = 15,888,644,220.53/145,953.06
  6. Step 6: Final answer
    x = 108,861.33

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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.