Home / 153,965.40-212,566.05-105,646.71

Finding the Fourth Proportional to 153,965.40, 212,566.05 and 105,646.71

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Solution

The fourth proportional to 153,965.40, 212,566.05 and 105,646.71 is: 145,856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,965.40 : 212,566.05 = 105,646.71 : x
  2. Step 2: Convert to fraction form
    153,965.40/212,566.05 = 105,646.71/x
  3. Step 3: Cross multiply
    153,965.40x = 212,566.05 × 105,646.71
  4. Step 4: Simplify right side
    153,965.40x = 22,456,903,840.20
  5. Step 5: Solve for x
    x = 22,456,903,840.20/153,965.40
  6. Step 6: Final answer
    x = 145,856.82

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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.