Home / 120,312.72-180,365.40-58,026.96

Finding the Fourth Proportional to 120,312.72, 180,365.40 and 58,026.96

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Solution

The fourth proportional to 120,312.72, 180,365.40 and 58,026.96 is: 86,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,312.72 : 180,365.40 = 58,026.96 : x
  2. Step 2: Convert to fraction form
    120,312.72/180,365.40 = 58,026.96/x
  3. Step 3: Cross multiply
    120,312.72x = 180,365.40 × 58,026.96
  4. Step 4: Simplify right side
    120,312.72x = 10,466,055,851.18
  5. Step 5: Solve for x
    x = 10,466,055,851.18/120,312.72
  6. Step 6: Final answer
    x = 86,990.44

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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.