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Finding the Fourth Proportional to 145,953.16, 201,415.27 and 78,885.16

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Solution

The fourth proportional to 145,953.16, 201,415.27 and 78,885.16 is: 108,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,953.16 : 201,415.27 = 78,885.16 : x
  2. Step 2: Convert to fraction form
    145,953.16/201,415.27 = 78,885.16/x
  3. Step 3: Cross multiply
    145,953.16x = 201,415.27 × 78,885.16
  4. Step 4: Simplify right side
    145,953.16x = 15,888,675,800.39
  5. Step 5: Solve for x
    x = 15,888,675,800.39/145,953.16
  6. Step 6: Final answer
    x = 108,861.47

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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.