Home / 131,421.60-197,002.80-64,807.20

Finding the Fourth Proportional to 131,421.60, 197,002.80 and 64,807.20

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Solution

The fourth proportional to 131,421.60, 197,002.80 and 64,807.20 is: 97,146.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.60 : 197,002.80 = 64,807.20 : x
  2. Step 2: Convert to fraction form
    131,421.60/197,002.80 = 64,807.20/x
  3. Step 3: Cross multiply
    131,421.60x = 197,002.80 × 64,807.20
  4. Step 4: Simplify right side
    131,421.60x = 12,767,199,860.16
  5. Step 5: Solve for x
    x = 12,767,199,860.16/131,421.60
  6. Step 6: Final answer
    x = 97,146.89

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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.