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Finding the Fourth Proportional to 153,573.77, 212,039.78 and 107,730.81

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Solution

The fourth proportional to 153,573.77, 212,039.78 and 107,730.81 is: 148,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,573.77 : 212,039.78 = 107,730.81 : x
  2. Step 2: Convert to fraction form
    153,573.77/212,039.78 = 107,730.81/x
  3. Step 3: Cross multiply
    153,573.77x = 212,039.78 × 107,730.81
  4. Step 4: Simplify right side
    153,573.77x = 22,843,216,712.97
  5. Step 5: Solve for x
    x = 22,843,216,712.97/153,573.77
  6. Step 6: Final answer
    x = 148,744.26

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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.