Home / 211,071.40-316,573.08-78,014.32

Finding the Fourth Proportional to 211,071.40, 316,573.08 and 78,014.32

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Solution

The fourth proportional to 211,071.40, 316,573.08 and 78,014.32 is: 117,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,071.40 : 316,573.08 = 78,014.32 : x
  2. Step 2: Convert to fraction form
    211,071.40/316,573.08 = 78,014.32/x
  3. Step 3: Cross multiply
    211,071.40x = 316,573.08 × 78,014.32
  4. Step 4: Simplify right side
    211,071.40x = 24,697,233,566.51
  5. Step 5: Solve for x
    x = 24,697,233,566.51/211,071.40
  6. Step 6: Final answer
    x = 117,008.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.