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Finding the Fourth Proportional to 99,315.99, 137,054.43 and 53,995.10

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Solution

The fourth proportional to 99,315.99, 137,054.43 and 53,995.10 is: 74,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,315.99 : 137,054.43 = 53,995.10 : x
  2. Step 2: Convert to fraction form
    99,315.99/137,054.43 = 53,995.10/x
  3. Step 3: Cross multiply
    99,315.99x = 137,054.43 × 53,995.10
  4. Step 4: Simplify right side
    99,315.99x = 7,400,266,968.02
  5. Step 5: Solve for x
    x = 7,400,266,968.02/99,315.99
  6. Step 6: Final answer
    x = 74,512.34

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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.