Home / 100,011.34-149,134.75-99,111.25

Finding the Fourth Proportional to 100,011.34, 149,134.75 and 99,111.25

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Solution

The fourth proportional to 100,011.34, 149,134.75 and 99,111.25 is: 147,792.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,011.34 : 149,134.75 = 99,111.25 : x
  2. Step 2: Convert to fraction form
    100,011.34/149,134.75 = 99,111.25/x
  3. Step 3: Cross multiply
    100,011.34x = 149,134.75 × 99,111.25
  4. Step 4: Simplify right side
    100,011.34x = 14,780,931,490.94
  5. Step 5: Solve for x
    x = 14,780,931,490.94/100,011.34
  6. Step 6: Final answer
    x = 147,792.56

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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.