Home / 142,430.22-196,545.72-77,886.66

Finding the Fourth Proportional to 142,430.22, 196,545.72 and 77,886.66

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Solution

The fourth proportional to 142,430.22, 196,545.72 and 77,886.66 is: 107,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,430.22 : 196,545.72 = 77,886.66 : x
  2. Step 2: Convert to fraction form
    142,430.22/196,545.72 = 77,886.66/x
  3. Step 3: Cross multiply
    142,430.22x = 196,545.72 × 77,886.66
  4. Step 4: Simplify right side
    142,430.22x = 15,308,289,668.10
  5. Step 5: Solve for x
    x = 15,308,289,668.10/142,430.22
  6. Step 6: Final answer
    x = 107,479.23

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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.