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Finding the Fourth Proportional to 137,887.96, 190,275.15 and 77,468.67

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Solution

The fourth proportional to 137,887.96, 190,275.15 and 77,468.67 is: 106,901.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,887.96 : 190,275.15 = 77,468.67 : x
  2. Step 2: Convert to fraction form
    137,887.96/190,275.15 = 77,468.67/x
  3. Step 3: Cross multiply
    137,887.96x = 190,275.15 × 77,468.67
  4. Step 4: Simplify right side
    137,887.96x = 14,740,362,074.45
  5. Step 5: Solve for x
    x = 14,740,362,074.45/137,887.96
  6. Step 6: Final answer
    x = 106,901.01

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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.