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Finding the Fourth Proportional to 131,459.80, 197,189.70 and 64,931.80

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Solution

The fourth proportional to 131,459.80, 197,189.70 and 64,931.80 is: 97,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,459.80 : 197,189.70 = 64,931.80 : x
  2. Step 2: Convert to fraction form
    131,459.80/197,189.70 = 64,931.80/x
  3. Step 3: Cross multiply
    131,459.80x = 197,189.70 × 64,931.80
  4. Step 4: Simplify right side
    131,459.80x = 12,803,882,162.46
  5. Step 5: Solve for x
    x = 12,803,882,162.46/131,459.80
  6. Step 6: Final answer
    x = 97,397.70

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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.