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Finding the Fourth Proportional to 103,045.68, 154,543.68 and 28,166.16

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Solution

The fourth proportional to 103,045.68, 154,543.68 and 28,166.16 is: 42,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,045.68 : 154,543.68 = 28,166.16 : x
  2. Step 2: Convert to fraction form
    103,045.68/154,543.68 = 28,166.16/x
  3. Step 3: Cross multiply
    103,045.68x = 154,543.68 × 28,166.16
  4. Step 4: Simplify right side
    103,045.68x = 4,352,902,017.87
  5. Step 5: Solve for x
    x = 4,352,902,017.87/103,045.68
  6. Step 6: Final answer
    x = 42,242.45

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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.