Home / 103,637.10-155,686.05-100,872.30

Finding the Fourth Proportional to 103,637.10, 155,686.05 and 100,872.30

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Solution

The fourth proportional to 103,637.10, 155,686.05 and 100,872.30 is: 151,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,637.10 : 155,686.05 = 100,872.30 : x
  2. Step 2: Convert to fraction form
    103,637.10/155,686.05 = 100,872.30/x
  3. Step 3: Cross multiply
    103,637.10x = 155,686.05 × 100,872.30
  4. Step 4: Simplify right side
    103,637.10x = 15,704,409,941.42
  5. Step 5: Solve for x
    x = 15,704,409,941.42/103,637.10
  6. Step 6: Final answer
    x = 151,532.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.