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Finding the Fourth Proportional to 99,703.68, 137,587.26 and 54,991.68

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Solution

The fourth proportional to 99,703.68, 137,587.26 and 54,991.68 is: 75,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,703.68 : 137,587.26 = 54,991.68 : x
  2. Step 2: Convert to fraction form
    99,703.68/137,587.26 = 54,991.68/x
  3. Step 3: Cross multiply
    99,703.68x = 137,587.26 × 54,991.68
  4. Step 4: Simplify right side
    99,703.68x = 7,566,154,574.00
  5. Step 5: Solve for x
    x = 7,566,154,574.00/99,703.68
  6. Step 6: Final answer
    x = 75,886.41

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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.