Home / 103,537.40-155,306.10-70,076.30

Finding the Fourth Proportional to 103,537.40, 155,306.10 and 70,076.30

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Solution

The fourth proportional to 103,537.40, 155,306.10 and 70,076.30 is: 105,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,537.40 : 155,306.10 = 70,076.30 : x
  2. Step 2: Convert to fraction form
    103,537.40/155,306.10 = 70,076.30/x
  3. Step 3: Cross multiply
    103,537.40x = 155,306.10 × 70,076.30
  4. Step 4: Simplify right side
    103,537.40x = 10,883,276,855.43
  5. Step 5: Solve for x
    x = 10,883,276,855.43/103,537.40
  6. Step 6: Final answer
    x = 105,114.45

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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.