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Finding the Fourth Proportional to 145,967.57, 201,435.13 and 78,899.57

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Solution

The fourth proportional to 145,967.57, 201,435.13 and 78,899.57 is: 108,881.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967.57 : 201,435.13 = 78,899.57 : x
  2. Step 2: Convert to fraction form
    145,967.57/201,435.13 = 78,899.57/x
  3. Step 3: Cross multiply
    145,967.57x = 201,435.13 × 78,899.57
  4. Step 4: Simplify right side
    145,967.57x = 15,893,145,139.89
  5. Step 5: Solve for x
    x = 15,893,145,139.89/145,967.57
  6. Step 6: Final answer
    x = 108,881.34

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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.