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Finding the Fourth Proportional to 153,925.74, 212,415.50 and 85,943.87

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Solution

The fourth proportional to 153,925.74, 212,415.50 and 85,943.87 is: 118,601.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,925.74 : 212,415.50 = 85,943.87 : x
  2. Step 2: Convert to fraction form
    153,925.74/212,415.50 = 85,943.87/x
  3. Step 3: Cross multiply
    153,925.74x = 212,415.50 × 85,943.87
  4. Step 4: Simplify right side
    153,925.74x = 18,255,809,270.77
  5. Step 5: Solve for x
    x = 18,255,809,270.77/153,925.74
  6. Step 6: Final answer
    x = 118,601.41

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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.