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Finding the Fourth Proportional to 157,788,679.60, 236,683,019.40 and 42,773,037.40

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Solution

The fourth proportional to 157,788,679.60, 236,683,019.40 and 42,773,037.40 is: 64,159,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,788,679.60 : 236,683,019.40 = 42,773,037.40 : x
  2. Step 2: Convert to fraction form
    157,788,679.60/236,683,019.40 = 42,773,037.40/x
  3. Step 3: Cross multiply
    157,788,679.60x = 236,683,019.40 × 42,773,037.40
  4. Step 4: Simplify right side
    157,788,679.60x = 10,123,651,640,741,126
  5. Step 5: Solve for x
    x = 10,123,651,640,741,126/157,788,679.60
  6. Step 6: Final answer
    x = 64,159,556.10

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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.