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Finding the Fourth Proportional to 145,975.61, 201,446.49 and 85,534.22

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Solution

The fourth proportional to 145,975.61, 201,446.49 and 85,534.22 is: 118,037.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,975.61 : 201,446.49 = 85,534.22 : x
  2. Step 2: Convert to fraction form
    145,975.61/201,446.49 = 85,534.22/x
  3. Step 3: Cross multiply
    145,975.61x = 201,446.49 × 85,534.22
  4. Step 4: Simplify right side
    145,975.61x = 17,230,567,386.66
  5. Step 5: Solve for x
    x = 17,230,567,386.66/145,975.61
  6. Step 6: Final answer
    x = 118,037.31

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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.