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Finding the Fourth Proportional to 172,032.40, 258,048.60 and 145,853.20

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Solution

The fourth proportional to 172,032.40, 258,048.60 and 145,853.20 is: 218,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,032.40 : 258,048.60 = 145,853.20 : x
  2. Step 2: Convert to fraction form
    172,032.40/258,048.60 = 145,853.20/x
  3. Step 3: Cross multiply
    172,032.40x = 258,048.60 × 145,853.20
  4. Step 4: Simplify right side
    172,032.40x = 37,637,214,065.52
  5. Step 5: Solve for x
    x = 37,637,214,065.52/172,032.40
  6. Step 6: Final answer
    x = 218,779.80

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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.