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Finding the Fourth Proportional to 101,130.52, 139,501.20 and 64,819.03

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Solution

The fourth proportional to 101,130.52, 139,501.20 and 64,819.03 is: 89,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,130.52 : 139,501.20 = 64,819.03 : x
  2. Step 2: Convert to fraction form
    101,130.52/139,501.20 = 64,819.03/x
  3. Step 3: Cross multiply
    101,130.52x = 139,501.20 × 64,819.03
  4. Step 4: Simplify right side
    101,130.52x = 9,042,332,143.74
  5. Step 5: Solve for x
    x = 9,042,332,143.74/101,130.52
  6. Step 6: Final answer
    x = 89,412.50

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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.