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Finding the Fourth Proportional to 99,988.96, 149,101.54 and 99,088.84

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Solution

The fourth proportional to 99,988.96, 149,101.54 and 99,088.84 is: 147,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,988.96 : 149,101.54 = 99,088.84 : x
  2. Step 2: Convert to fraction form
    99,988.96/149,101.54 = 99,088.84/x
  3. Step 3: Cross multiply
    99,988.96x = 149,101.54 × 99,088.84
  4. Step 4: Simplify right side
    99,988.96x = 14,774,298,640.81
  5. Step 5: Solve for x
    x = 14,774,298,640.81/99,988.96
  6. Step 6: Final answer
    x = 147,759.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.