Home / 103,639.40-155,343.90-56,925.80

Finding the Fourth Proportional to 103,639.40, 155,343.90 and 56,925.80

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Solution

The fourth proportional to 103,639.40, 155,343.90 and 56,925.80 is: 85,325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.40 : 155,343.90 = 56,925.80 : x
  2. Step 2: Convert to fraction form
    103,639.40/155,343.90 = 56,925.80/x
  3. Step 3: Cross multiply
    103,639.40x = 155,343.90 × 56,925.80
  4. Step 4: Simplify right side
    103,639.40x = 8,843,075,782.62
  5. Step 5: Solve for x
    x = 8,843,075,782.62/103,639.40
  6. Step 6: Final answer
    x = 85,325.42

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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.