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Finding the Fourth Proportional to 111,152.32, 153,332.80 and 75,330.08

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Solution

The fourth proportional to 111,152.32, 153,332.80 and 75,330.08 is: 103,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,152.32 : 153,332.80 = 75,330.08 : x
  2. Step 2: Convert to fraction form
    111,152.32/153,332.80 = 75,330.08/x
  3. Step 3: Cross multiply
    111,152.32x = 153,332.80 × 75,330.08
  4. Step 4: Simplify right side
    111,152.32x = 11,550,572,090.62
  5. Step 5: Solve for x
    x = 11,550,572,090.62/111,152.32
  6. Step 6: Final answer
    x = 103,916.61

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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.