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Finding the Fourth Proportional to 99,756.28, 137,663.60 and 63,946.28

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Solution

The fourth proportional to 99,756.28, 137,663.60 and 63,946.28 is: 88,245.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,756.28 : 137,663.60 = 63,946.28 : x
  2. Step 2: Convert to fraction form
    99,756.28/137,663.60 = 63,946.28/x
  3. Step 3: Cross multiply
    99,756.28x = 137,663.60 × 63,946.28
  4. Step 4: Simplify right side
    99,756.28x = 8,803,075,111.41
  5. Step 5: Solve for x
    x = 8,803,075,111.41/99,756.28
  6. Step 6: Final answer
    x = 88,245.82

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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.