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Finding the Fourth Proportional to 139,259.48, 208,700.52 and 101,643.08

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Solution

The fourth proportional to 139,259.48, 208,700.52 and 101,643.08 is: 152,326.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,259.48 : 208,700.52 = 101,643.08 : x
  2. Step 2: Convert to fraction form
    139,259.48/208,700.52 = 101,643.08/x
  3. Step 3: Cross multiply
    139,259.48x = 208,700.52 × 101,643.08
  4. Step 4: Simplify right side
    139,259.48x = 21,212,963,650.40
  5. Step 5: Solve for x
    x = 21,212,963,650.40/139,259.48
  6. Step 6: Final answer
    x = 152,326.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.