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Finding the Fourth Proportional to 99,071.26, 136,718.31 and 56,630.70

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Solution

The fourth proportional to 99,071.26, 136,718.31 and 56,630.70 is: 78,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,071.26 : 136,718.31 = 56,630.70 : x
  2. Step 2: Convert to fraction form
    99,071.26/136,718.31 = 56,630.70/x
  3. Step 3: Cross multiply
    99,071.26x = 136,718.31 × 56,630.70
  4. Step 4: Simplify right side
    99,071.26x = 7,742,453,598.12
  5. Step 5: Solve for x
    x = 7,742,453,598.12/99,071.26
  6. Step 6: Final answer
    x = 78,150.35

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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.