Home / 229,501.50-316,741.77-128,899.50

Finding the Fourth Proportional to 229,501.50, 316,741.77 and 128,899.50

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Solution

The fourth proportional to 229,501.50, 316,741.77 and 128,899.50 is: 177,897.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,501.50 : 316,741.77 = 128,899.50 : x
  2. Step 2: Convert to fraction form
    229,501.50/316,741.77 = 128,899.50/x
  3. Step 3: Cross multiply
    229,501.50x = 316,741.77 × 128,899.50
  4. Step 4: Simplify right side
    229,501.50x = 40,827,855,782.12
  5. Step 5: Solve for x
    x = 40,827,855,782.12/229,501.50
  6. Step 6: Final answer
    x = 177,897.99

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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.