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Finding the Fourth Proportional to 140,293.62, 210,356.46 and 65,430.72

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Solution

The fourth proportional to 140,293.62, 210,356.46 and 65,430.72 is: 98,106.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,293.62 : 210,356.46 = 65,430.72 : x
  2. Step 2: Convert to fraction form
    140,293.62/210,356.46 = 65,430.72/x
  3. Step 3: Cross multiply
    140,293.62x = 210,356.46 × 65,430.72
  4. Step 4: Simplify right side
    140,293.62x = 13,763,774,634.45
  5. Step 5: Solve for x
    x = 13,763,774,634.45/140,293.62
  6. Step 6: Final answer
    x = 98,106.92

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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.