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Finding the Fourth Proportional to 127,278.88, 175,642.32 and 70,688.32

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Solution

The fourth proportional to 127,278.88, 175,642.32 and 70,688.32 is: 97,548.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,278.88 : 175,642.32 = 70,688.32 : x
  2. Step 2: Convert to fraction form
    127,278.88/175,642.32 = 70,688.32/x
  3. Step 3: Cross multiply
    127,278.88x = 175,642.32 × 70,688.32
  4. Step 4: Simplify right side
    127,278.88x = 12,415,860,521.70
  5. Step 5: Solve for x
    x = 12,415,860,521.70/127,278.88
  6. Step 6: Final answer
    x = 97,548.47

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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.