Home / 102,322.40-153,811.65-72,943.70

Finding the Fourth Proportional to 102,322.40, 153,811.65 and 72,943.70

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Solution

The fourth proportional to 102,322.40, 153,811.65 and 72,943.70 is: 109,649.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,322.40 : 153,811.65 = 72,943.70 : x
  2. Step 2: Convert to fraction form
    102,322.40/153,811.65 = 72,943.70/x
  3. Step 3: Cross multiply
    102,322.40x = 153,811.65 × 72,943.70
  4. Step 4: Simplify right side
    102,322.40x = 11,219,590,854.11
  5. Step 5: Solve for x
    x = 11,219,590,854.11/102,322.40
  6. Step 6: Final answer
    x = 109,649.41

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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.