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Finding the Fourth Proportional to 130,485.78, 180,064.35 and 73,897.56

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Solution

The fourth proportional to 130,485.78, 180,064.35 and 73,897.56 is: 101,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,485.78 : 180,064.35 = 73,897.56 : x
  2. Step 2: Convert to fraction form
    130,485.78/180,064.35 = 73,897.56/x
  3. Step 3: Cross multiply
    130,485.78x = 180,064.35 × 73,897.56
  4. Step 4: Simplify right side
    130,485.78x = 13,306,316,107.99
  5. Step 5: Solve for x
    x = 13,306,316,107.99/130,485.78
  6. Step 6: Final answer
    x = 101,975.22

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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.