Home / 141,707.77-195,565.56-78,045.55

Finding the Fourth Proportional to 141,707.77, 195,565.56 and 78,045.55

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Solution

The fourth proportional to 141,707.77, 195,565.56 and 78,045.55 is: 107,707.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,707.77 : 195,565.56 = 78,045.55 : x
  2. Step 2: Convert to fraction form
    141,707.77/195,565.56 = 78,045.55/x
  3. Step 3: Cross multiply
    141,707.77x = 195,565.56 × 78,045.55
  4. Step 4: Simplify right side
    141,707.77x = 15,263,020,909.67
  5. Step 5: Solve for x
    x = 15,263,020,909.67/141,707.77
  6. Step 6: Final answer
    x = 107,707.72

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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.