Home / 115,072.10-172,387.02-70,569.08

Finding the Fourth Proportional to 115,072.10, 172,387.02 and 70,569.08

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Solution

The fourth proportional to 115,072.10, 172,387.02 and 70,569.08 is: 105,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,072.10 : 172,387.02 = 70,569.08 : x
  2. Step 2: Convert to fraction form
    115,072.10/172,387.02 = 70,569.08/x
  3. Step 3: Cross multiply
    115,072.10x = 172,387.02 × 70,569.08
  4. Step 4: Simplify right side
    115,072.10x = 12,165,193,405.34
  5. Step 5: Solve for x
    x = 12,165,193,405.34/115,072.10
  6. Step 6: Final answer
    x = 105,718.01

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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.