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Finding the Fourth Proportional to 102,330.77, 153,549.45 and 77,363.44

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Solution

The fourth proportional to 102,330.77, 153,549.45 and 77,363.44 is: 116,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,330.77 : 153,549.45 = 77,363.44 : x
  2. Step 2: Convert to fraction form
    102,330.77/153,549.45 = 77,363.44/x
  3. Step 3: Cross multiply
    102,330.77x = 153,549.45 × 77,363.44
  4. Step 4: Simplify right side
    102,330.77x = 11,879,113,278.23
  5. Step 5: Solve for x
    x = 11,879,113,278.23/102,330.77
  6. Step 6: Final answer
    x = 116,085.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.