Home / 153,628.65-212,023.27-85,656.69

Finding the Fourth Proportional to 153,628.65, 212,023.27 and 85,656.69

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Solution

The fourth proportional to 153,628.65, 212,023.27 and 85,656.69 is: 118,215.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,628.65 : 212,023.27 = 85,656.69 : x
  2. Step 2: Convert to fraction form
    153,628.65/212,023.27 = 85,656.69/x
  3. Step 3: Cross multiply
    153,628.65x = 212,023.27 × 85,656.69
  4. Step 4: Simplify right side
    153,628.65x = 18,161,211,618.25
  5. Step 5: Solve for x
    x = 18,161,211,618.25/153,628.65
  6. Step 6: Final answer
    x = 118,215.00

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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.