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Finding the Fourth Proportional to 152,405.76, 210,392.88 and 101,503.20

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Solution

The fourth proportional to 152,405.76, 210,392.88 and 101,503.20 is: 140,122.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,405.76 : 210,392.88 = 101,503.20 : x
  2. Step 2: Convert to fraction form
    152,405.76/210,392.88 = 101,503.20/x
  3. Step 3: Cross multiply
    152,405.76x = 210,392.88 × 101,503.20
  4. Step 4: Simplify right side
    152,405.76x = 21,355,550,577.22
  5. Step 5: Solve for x
    x = 21,355,550,577.22/152,405.76
  6. Step 6: Final answer
    x = 140,122.99

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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.