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Finding the Fourth Proportional to 103,158.90, 154,751.04 and 39,980.07

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Solution

The fourth proportional to 103,158.90, 154,751.04 and 39,980.07 is: 59,975.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,158.90 : 154,751.04 = 39,980.07 : x
  2. Step 2: Convert to fraction form
    103,158.90/154,751.04 = 39,980.07/x
  3. Step 3: Cross multiply
    103,158.90x = 154,751.04 × 39,980.07
  4. Step 4: Simplify right side
    103,158.90x = 6,186,957,411.77
  5. Step 5: Solve for x
    x = 6,186,957,411.77/103,158.90
  6. Step 6: Final answer
    x = 59,975.02

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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.