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Finding the Fourth Proportional to 153,647.52, 212,210.13 and 102,571.32

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Solution

The fourth proportional to 153,647.52, 212,210.13 and 102,571.32 is: 141,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,647.52 : 212,210.13 = 102,571.32 : x
  2. Step 2: Convert to fraction form
    153,647.52/212,210.13 = 102,571.32/x
  3. Step 3: Cross multiply
    153,647.52x = 212,210.13 × 102,571.32
  4. Step 4: Simplify right side
    153,647.52x = 21,766,673,151.47
  5. Step 5: Solve for x
    x = 21,766,673,151.47/153,647.52
  6. Step 6: Final answer
    x = 141,666.28

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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.