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Finding the Fourth Proportional to 90,363.16, 124,748.36 and 70,174.72

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Solution

The fourth proportional to 90,363.16, 124,748.36 and 70,174.72 is: 96,877.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,363.16 : 124,748.36 = 70,174.72 : x
  2. Step 2: Convert to fraction form
    90,363.16/124,748.36 = 70,174.72/x
  3. Step 3: Cross multiply
    90,363.16x = 124,748.36 × 70,174.72
  4. Step 4: Simplify right side
    90,363.16x = 8,754,181,233.46
  5. Step 5: Solve for x
    x = 8,754,181,233.46/90,363.16
  6. Step 6: Final answer
    x = 96,877.77

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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.