Home / 103,488.90-155,233.35-36,931.20

Finding the Fourth Proportional to 103,488.90, 155,233.35 and 36,931.20

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Solution

The fourth proportional to 103,488.90, 155,233.35 and 36,931.20 is: 55,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,488.90 : 155,233.35 = 36,931.20 : x
  2. Step 2: Convert to fraction form
    103,488.90/155,233.35 = 36,931.20/x
  3. Step 3: Cross multiply
    103,488.90x = 155,233.35 × 36,931.20
  4. Step 4: Simplify right side
    103,488.90x = 5,732,953,895.52
  5. Step 5: Solve for x
    x = 5,732,953,895.52/103,488.90
  6. Step 6: Final answer
    x = 55,396.80

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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.