Home / 103,885.41-155,705.07-47,678.16

Finding the Fourth Proportional to 103,885.41, 155,705.07 and 47,678.16

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Solution

The fourth proportional to 103,885.41, 155,705.07 and 47,678.16 is: 71,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,885.41 : 155,705.07 = 47,678.16 : x
  2. Step 2: Convert to fraction form
    103,885.41/155,705.07 = 47,678.16/x
  3. Step 3: Cross multiply
    103,885.41x = 155,705.07 × 47,678.16
  4. Step 4: Simplify right side
    103,885.41x = 7,423,731,240.27
  5. Step 5: Solve for x
    x = 7,423,731,240.27/103,885.41
  6. Step 6: Final answer
    x = 71,460.77

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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.