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Finding the Fourth Proportional to 143,420.60, 215,130.90 and 110,307.80

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Solution

The fourth proportional to 143,420.60, 215,130.90 and 110,307.80 is: 165,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,420.60 : 215,130.90 = 110,307.80 : x
  2. Step 2: Convert to fraction form
    143,420.60/215,130.90 = 110,307.80/x
  3. Step 3: Cross multiply
    143,420.60x = 215,130.90 × 110,307.80
  4. Step 4: Simplify right side
    143,420.60x = 23,730,616,291.02
  5. Step 5: Solve for x
    x = 23,730,616,291.02/143,420.60
  6. Step 6: Final answer
    x = 165,461.70

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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.