Home / 210,985.32-291,159.72-115,492.08

Finding the Fourth Proportional to 210,985.32, 291,159.72 and 115,492.08

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Solution

The fourth proportional to 210,985.32, 291,159.72 and 115,492.08 is: 159,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,985.32 : 291,159.72 = 115,492.08 : x
  2. Step 2: Convert to fraction form
    210,985.32/291,159.72 = 115,492.08/x
  3. Step 3: Cross multiply
    210,985.32x = 291,159.72 × 115,492.08
  4. Step 4: Simplify right side
    210,985.32x = 33,626,641,675.02
  5. Step 5: Solve for x
    x = 33,626,641,675.02/210,985.32
  6. Step 6: Final answer
    x = 159,379.06

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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.