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Finding the Fourth Proportional to 153,397.89, 211,746.87 and 89,756.19

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Solution

The fourth proportional to 153,397.89, 211,746.87 and 89,756.19 is: 123,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,397.89 : 211,746.87 = 89,756.19 : x
  2. Step 2: Convert to fraction form
    153,397.89/211,746.87 = 89,756.19/x
  3. Step 3: Cross multiply
    153,397.89x = 211,746.87 × 89,756.19
  4. Step 4: Simplify right side
    153,397.89x = 19,005,592,295.63
  5. Step 5: Solve for x
    x = 19,005,592,295.63/153,397.89
  6. Step 6: Final answer
    x = 123,897.35

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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.