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Finding the Fourth Proportional to 145,980.61, 201,453.39 and 85,539.22

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Solution

The fourth proportional to 145,980.61, 201,453.39 and 85,539.22 is: 118,044.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,980.61 : 201,453.39 = 85,539.22 : x
  2. Step 2: Convert to fraction form
    145,980.61/201,453.39 = 85,539.22/x
  3. Step 3: Cross multiply
    145,980.61x = 201,453.39 × 85,539.22
  4. Step 4: Simplify right side
    145,980.61x = 17,232,164,839.69
  5. Step 5: Solve for x
    x = 17,232,164,839.69/145,980.61
  6. Step 6: Final answer
    x = 118,044.21

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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.