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Finding the Fourth Proportional to 157,607.70, 236,411.55 and 78,875.70

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Solution

The fourth proportional to 157,607.70, 236,411.55 and 78,875.70 is: 118,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,607.70 : 236,411.55 = 78,875.70 : x
  2. Step 2: Convert to fraction form
    157,607.70/236,411.55 = 78,875.70/x
  3. Step 3: Cross multiply
    157,607.70x = 236,411.55 × 78,875.70
  4. Step 4: Simplify right side
    157,607.70x = 18,647,126,494.34
  5. Step 5: Solve for x
    x = 18,647,126,494.34/157,607.70
  6. Step 6: Final answer
    x = 118,313.55

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1.5x scale

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.