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Finding the Fourth Proportional to 92,178.18, 127,222.11 and 87,970.95

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Solution

The fourth proportional to 92,178.18, 127,222.11 and 87,970.95 is: 121,415.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,178.18 : 127,222.11 = 87,970.95 : x
  2. Step 2: Convert to fraction form
    92,178.18/127,222.11 = 87,970.95/x
  3. Step 3: Cross multiply
    92,178.18x = 127,222.11 × 87,970.95
  4. Step 4: Simplify right side
    92,178.18x = 11,191,849,877.70
  5. Step 5: Solve for x
    x = 11,191,849,877.70/92,178.18
  6. Step 6: Final answer
    x = 121,415.39

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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.