Home / 103,557.90-155,337.20-31,511.50

Finding the Fourth Proportional to 103,557.90, 155,337.20 and 31,511.50

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Solution

The fourth proportional to 103,557.90, 155,337.20 and 31,511.50 is: 47,267.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,557.90 : 155,337.20 = 31,511.50 : x
  2. Step 2: Convert to fraction form
    103,557.90/155,337.20 = 31,511.50/x
  3. Step 3: Cross multiply
    103,557.90x = 155,337.20 × 31,511.50
  4. Step 4: Simplify right side
    103,557.90x = 4,894,908,177.80
  5. Step 5: Solve for x
    x = 4,894,908,177.80/103,557.90
  6. Step 6: Final answer
    x = 47,267.36

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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.