Home / 131,430.10-197,015.55-64,815.70

Finding the Fourth Proportional to 131,430.10, 197,015.55 and 64,815.70

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Solution

The fourth proportional to 131,430.10, 197,015.55 and 64,815.70 is: 97,159.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.10 : 197,015.55 = 64,815.70 : x
  2. Step 2: Convert to fraction form
    131,430.10/197,015.55 = 64,815.70/x
  3. Step 3: Cross multiply
    131,430.10x = 197,015.55 × 64,815.70
  4. Step 4: Simplify right side
    131,430.10x = 12,769,700,784.14
  5. Step 5: Solve for x
    x = 12,769,700,784.14/131,430.10
  6. Step 6: Final answer
    x = 97,159.64

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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.