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Finding the Fourth Proportional to 103,547.00, 155,320.90 and 31,500.74

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Solution

The fourth proportional to 103,547.00, 155,320.90 and 31,500.74 is: 47,251.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,547.00 : 155,320.90 = 31,500.74 : x
  2. Step 2: Convert to fraction form
    103,547.00/155,320.90 = 31,500.74/x
  3. Step 3: Cross multiply
    103,547.00x = 155,320.90 × 31,500.74
  4. Step 4: Simplify right side
    103,547.00x = 4,892,722,432.11
  5. Step 5: Solve for x
    x = 4,892,722,432.11/103,547.00
  6. Step 6: Final answer
    x = 47,251.23

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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.