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Finding the Fourth Proportional to 145,967.07, 201,434.43 and 78,899.07

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Solution

The fourth proportional to 145,967.07, 201,434.43 and 78,899.07 is: 108,880.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967.07 : 201,434.43 = 78,899.07 : x
  2. Step 2: Convert to fraction form
    145,967.07/201,434.43 = 78,899.07/x
  3. Step 3: Cross multiply
    145,967.07x = 201,434.43 × 78,899.07
  4. Step 4: Simplify right side
    145,967.07x = 15,892,989,192.98
  5. Step 5: Solve for x
    x = 15,892,989,192.98/145,967.07
  6. Step 6: Final answer
    x = 108,880.65

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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.