Home / 142,897.21-197,207.00-79,235.01

Finding the Fourth Proportional to 142,897.21, 197,207.00 and 79,235.01

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Solution

The fourth proportional to 142,897.21, 197,207.00 and 79,235.01 is: 109,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,897.21 : 197,207.00 = 79,235.01 : x
  2. Step 2: Convert to fraction form
    142,897.21/197,207.00 = 79,235.01/x
  3. Step 3: Cross multiply
    142,897.21x = 197,207.00 × 79,235.01
  4. Step 4: Simplify right side
    142,897.21x = 15,625,698,963.72
  5. Step 5: Solve for x
    x = 15,625,698,963.72/142,897.21
  6. Step 6: Final answer
    x = 109,349.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.