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Finding the Fourth Proportional to 94,547.20, 141,820.80 and 89,939.20

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Solution

The fourth proportional to 94,547.20, 141,820.80 and 89,939.20 is: 134,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,547.20 : 141,820.80 = 89,939.20 : x
  2. Step 2: Convert to fraction form
    94,547.20/141,820.80 = 89,939.20/x
  3. Step 3: Cross multiply
    94,547.20x = 141,820.80 × 89,939.20
  4. Step 4: Simplify right side
    94,547.20x = 12,755,249,295.36
  5. Step 5: Solve for x
    x = 12,755,249,295.36/94,547.20
  6. Step 6: Final answer
    x = 134,908.80

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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.