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Finding the Fourth Proportional to 122,543.70, 183,815.55 and 52,430.10

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Solution

The fourth proportional to 122,543.70, 183,815.55 and 52,430.10 is: 78,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,543.70 : 183,815.55 = 52,430.10 : x
  2. Step 2: Convert to fraction form
    122,543.70/183,815.55 = 52,430.10/x
  3. Step 3: Cross multiply
    122,543.70x = 183,815.55 × 52,430.10
  4. Step 4: Simplify right side
    122,543.70x = 9,637,467,668.06
  5. Step 5: Solve for x
    x = 9,637,467,668.06/122,543.70
  6. Step 6: Final answer
    x = 78,645.15

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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.