Home / 153,929.55-212,420.73-85,947.66

Finding the Fourth Proportional to 153,929.55, 212,420.73 and 85,947.66

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Solution

The fourth proportional to 153,929.55, 212,420.73 and 85,947.66 is: 118,606.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,929.55 : 212,420.73 = 85,947.66 : x
  2. Step 2: Convert to fraction form
    153,929.55/212,420.73 = 85,947.66/x
  3. Step 3: Cross multiply
    153,929.55x = 212,420.73 × 85,947.66
  4. Step 4: Simplify right side
    153,929.55x = 18,257,064,678.99
  5. Step 5: Solve for x
    x = 18,257,064,678.99/153,929.55
  6. Step 6: Final answer
    x = 118,606.63

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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.