Home / 99,343.60-137,063.75-56,316.20

Finding the Fourth Proportional to 99,343.60, 137,063.75 and 56,316.20

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Solution

The fourth proportional to 99,343.60, 137,063.75 and 56,316.20 is: 77,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,343.60 : 137,063.75 = 56,316.20 : x
  2. Step 2: Convert to fraction form
    99,343.60/137,063.75 = 56,316.20/x
  3. Step 3: Cross multiply
    99,343.60x = 137,063.75 × 56,316.20
  4. Step 4: Simplify right side
    99,343.60x = 7,718,908,590.85
  5. Step 5: Solve for x
    x = 7,718,908,590.85/99,343.60
  6. Step 6: Final answer
    x = 77,699.10

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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.