Home / 153,670.34-212,077.77-85,678.13

Finding the Fourth Proportional to 153,670.34, 212,077.77 and 85,678.13

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Solution

The fourth proportional to 153,670.34, 212,077.77 and 85,678.13 is: 118,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,670.34 : 212,077.77 = 85,678.13 : x
  2. Step 2: Convert to fraction form
    153,670.34/212,077.77 = 85,678.13/x
  3. Step 3: Cross multiply
    153,670.34x = 212,077.77 × 85,678.13
  4. Step 4: Simplify right side
    153,670.34x = 18,170,426,748.17
  5. Step 5: Solve for x
    x = 18,170,426,748.17/153,670.34
  6. Step 6: Final answer
    x = 118,242.90

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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.