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Finding the Fourth Proportional to 111,429.68, 153,783.45 and 63,673.74

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Solution

The fourth proportional to 111,429.68, 153,783.45 and 63,673.74 is: 87,875.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,429.68 : 153,783.45 = 63,673.74 : x
  2. Step 2: Convert to fraction form
    111,429.68/153,783.45 = 63,673.74/x
  3. Step 3: Cross multiply
    111,429.68x = 153,783.45 × 63,673.74
  4. Step 4: Simplify right side
    111,429.68x = 9,791,967,411.60
  5. Step 5: Solve for x
    x = 9,791,967,411.60/111,429.68
  6. Step 6: Final answer
    x = 87,875.76

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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.