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Finding the Fourth Proportional to 148,813.71, 205,364.59 and 87,573.45

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Solution

The fourth proportional to 148,813.71, 205,364.59 and 87,573.45 is: 120,852.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,813.71 : 205,364.59 = 87,573.45 : x
  2. Step 2: Convert to fraction form
    148,813.71/205,364.59 = 87,573.45/x
  3. Step 3: Cross multiply
    148,813.71x = 205,364.59 × 87,573.45
  4. Step 4: Simplify right side
    148,813.71x = 17,984,484,627.31
  5. Step 5: Solve for x
    x = 17,984,484,627.31/148,813.71
  6. Step 6: Final answer
    x = 120,852.34

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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.