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Finding the Fourth Proportional to 117,116.88, 175,491.36 and 90,528

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Solution

The fourth proportional to 117,116.88, 175,491.36 and 90,528 is: 135,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,116.88 : 175,491.36 = 90,528 : x
  2. Step 2: Convert to fraction form
    117,116.88/175,491.36 = 90,528/x
  3. Step 3: Cross multiply
    117,116.88x = 175,491.36 × 90,528
  4. Step 4: Simplify right side
    117,116.88x = 15,886,881,838.08
  5. Step 5: Solve for x
    x = 15,886,881,838.08/117,116.88
  6. Step 6: Final answer
    x = 135,649.80

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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.