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Finding the Fourth Proportional to 157,075.60, 235,613.40 and 90,645.48

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Solution

The fourth proportional to 157,075.60, 235,613.40 and 90,645.48 is: 135,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,075.60 : 235,613.40 = 90,645.48 : x
  2. Step 2: Convert to fraction form
    157,075.60/235,613.40 = 90,645.48/x
  3. Step 3: Cross multiply
    157,075.60x = 235,613.40 × 90,645.48
  4. Step 4: Simplify right side
    157,075.60x = 21,357,289,737.43
  5. Step 5: Solve for x
    x = 21,357,289,737.43/157,075.60
  6. Step 6: Final answer
    x = 135,968.22

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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.