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Finding the Fourth Proportional to 99,459.84, 137,250.54 and 56,988.84

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Solution

The fourth proportional to 99,459.84, 137,250.54 and 56,988.84 is: 78,642.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,459.84 : 137,250.54 = 56,988.84 : x
  2. Step 2: Convert to fraction form
    99,459.84/137,250.54 = 56,988.84/x
  3. Step 3: Cross multiply
    99,459.84x = 137,250.54 × 56,988.84
  4. Step 4: Simplify right side
    99,459.84x = 7,821,749,063.97
  5. Step 5: Solve for x
    x = 7,821,749,063.97/99,459.84
  6. Step 6: Final answer
    x = 78,642.28

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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.