Home / 142,312.08-196,387.68-78,648.48

Finding the Fourth Proportional to 142,312.08, 196,387.68 and 78,648.48

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Solution

The fourth proportional to 142,312.08, 196,387.68 and 78,648.48 is: 108,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,312.08 : 196,387.68 = 78,648.48 : x
  2. Step 2: Convert to fraction form
    142,312.08/196,387.68 = 78,648.48/x
  3. Step 3: Cross multiply
    142,312.08x = 196,387.68 × 78,648.48
  4. Step 4: Simplify right side
    142,312.08x = 15,445,592,522.73
  5. Step 5: Solve for x
    x = 15,445,592,522.73/142,312.08
  6. Step 6: Final answer
    x = 108,533.25

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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.