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Finding the Fourth Proportional to 141,420.95, 195,160.88 and 77,762.87

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Solution

The fourth proportional to 141,420.95, 195,160.88 and 77,762.87 is: 107,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,420.95 : 195,160.88 = 77,762.87 : x
  2. Step 2: Convert to fraction form
    141,420.95/195,160.88 = 77,762.87/x
  3. Step 3: Cross multiply
    141,420.95x = 195,160.88 × 77,762.87
  4. Step 4: Simplify right side
    141,420.95x = 15,176,269,751.71
  5. Step 5: Solve for x
    x = 15,176,269,751.71/141,420.95
  6. Step 6: Final answer
    x = 107,312.74

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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.