Home / 143,330.07-197,802.51-79,666.50

Finding the Fourth Proportional to 143,330.07, 197,802.51 and 79,666.50

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Solution

The fourth proportional to 143,330.07, 197,802.51 and 79,666.50 is: 109,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,330.07 : 197,802.51 = 79,666.50 : x
  2. Step 2: Convert to fraction form
    143,330.07/197,802.51 = 79,666.50/x
  3. Step 3: Cross multiply
    143,330.07x = 197,802.51 × 79,666.50
  4. Step 4: Simplify right side
    143,330.07x = 15,758,233,662.92
  5. Step 5: Solve for x
    x = 15,758,233,662.92/143,330.07
  6. Step 6: Final answer
    x = 109,943.67

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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.