Home / 93,577.09-129,159.38-78,445.78

Finding the Fourth Proportional to 93,577.09, 129,159.38 and 78,445.78

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Solution

The fourth proportional to 93,577.09, 129,159.38 and 78,445.78 is: 108,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,577.09 : 129,159.38 = 78,445.78 : x
  2. Step 2: Convert to fraction form
    93,577.09/129,159.38 = 78,445.78/x
  3. Step 3: Cross multiply
    93,577.09x = 129,159.38 × 78,445.78
  4. Step 4: Simplify right side
    93,577.09x = 10,132,007,270.39
  5. Step 5: Solve for x
    x = 10,132,007,270.39/93,577.09
  6. Step 6: Final answer
    x = 108,274.45

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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.