Home / 142,312.50-196,374.24-78,641.64

Finding the Fourth Proportional to 142,312.50, 196,374.24 and 78,641.64

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Solution

The fourth proportional to 142,312.50, 196,374.24 and 78,641.64 is: 108,516.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,312.50 : 196,374.24 = 78,641.64 : x
  2. Step 2: Convert to fraction form
    142,312.50/196,374.24 = 78,641.64/x
  3. Step 3: Cross multiply
    142,312.50x = 196,374.24 × 78,641.64
  4. Step 4: Simplify right side
    142,312.50x = 15,443,192,287.35
  5. Step 5: Solve for x
    x = 15,443,192,287.35/142,312.50
  6. Step 6: Final answer
    x = 108,516.06

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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.