Home / 98,878.50-136,452.33-56,436.12

Finding the Fourth Proportional to 98,878.50, 136,452.33 and 56,436.12

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Solution

The fourth proportional to 98,878.50, 136,452.33 and 56,436.12 is: 77,881.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,878.50 : 136,452.33 = 56,436.12 : x
  2. Step 2: Convert to fraction form
    98,878.50/136,452.33 = 56,436.12/x
  3. Step 3: Cross multiply
    98,878.50x = 136,452.33 × 56,436.12
  4. Step 4: Simplify right side
    98,878.50x = 7,700,840,070.16
  5. Step 5: Solve for x
    x = 7,700,840,070.16/98,878.50
  6. Step 6: Final answer
    x = 77,881.85

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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.