Home / 153,628.16-212,010.74-85,656.20

Finding the Fourth Proportional to 153,628.16, 212,010.74 and 85,656.20

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Solution

The fourth proportional to 153,628.16, 212,010.74 and 85,656.20 is: 118,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,628.16 : 212,010.74 = 85,656.20 : x
  2. Step 2: Convert to fraction form
    153,628.16/212,010.74 = 85,656.20/x
  3. Step 3: Cross multiply
    153,628.16x = 212,010.74 × 85,656.20
  4. Step 4: Simplify right side
    153,628.16x = 18,160,034,347.59
  5. Step 5: Solve for x
    x = 18,160,034,347.59/153,628.16
  6. Step 6: Final answer
    x = 118,207.72

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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.