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Finding the Fourth Proportional to 130,897.75, 180,639.59 and 73,539.49

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Solution

The fourth proportional to 130,897.75, 180,639.59 and 73,539.49 is: 101,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,897.75 : 180,639.59 = 73,539.49 : x
  2. Step 2: Convert to fraction form
    130,897.75/180,639.59 = 73,539.49/x
  3. Step 3: Cross multiply
    130,897.75x = 180,639.59 × 73,539.49
  4. Step 4: Simplify right side
    130,897.75x = 13,284,143,322.41
  5. Step 5: Solve for x
    x = 13,284,143,322.41/130,897.75
  6. Step 6: Final answer
    x = 101,484.89

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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.